Male - Age at sexual maturity

(1-15 years)


Species Primary Data Secondary Data Reference
Anguilla anguilla 10-18 14.0 Spillmann, 1961
Anguilla anguilla Mean age about 7, range 3.4-12.3, means in various locations 7.85 Vollestad and Jonsson, 1986
Anguilla anguilla 12-18, means in different areas 15.0 Svedäng et al, 1996
Anguilla anguilla 3-12 [Female] 7.5 Bruslé and Quignard, 2001
Anguilla anguilla 8-9 [France], 15-18 [Germany], female 8.5 Fishbase, 2006
Anguilla anguilla Age at maturity is highly variable, ranging from 6 to 50 years in females over a latitudinal gradient. In Northern Europe the mean age at maturity of females can range from 12 to 20 years (or older), while in Southern Europe it is 6-8 years 7.0 Vincent et al, 2005
Alosa alosa 3-6 4.5 Billard, 1997
Alosa alosa 4-6 5.0 Bruslé and Quignard, 2001
Alosa alosa 5 [mode, but between 3-8] 5.5 Mennesson-Boisneau et al, 2000
Alosa alosa 4-6 [Female specified] 5.0 Maitland and Lyle, 2005
Alosa alosa 4-6 [Female] 5.0 Bengen et al, 1991
Alosa alosa 3-6 [Female] 4.5 Fishbase, 2006
Alosa alosa 3-4 [Both sex] 3.5 Maitland and Hatton-Ellis, 2000
Alosa alosa Adults range from 3 and 8 years 3.0 Aprahamian et al, 2001
Alosa alosa 5 [Female] 5.0 Bensettiti and Gaudillat, 2002
Alosa alosa Most of spawners of both sex were 5 years old, the spawning adutls of age 3 and 7 years were less than 0.2% for both sex 5.0 Lambert et al, 2001
Alosa alosa Sampled individuals in 2001 and 2002 were between 4 and 7 years for females 2001.0 Acolas et al, 2006
Alosa fallax 4-7 5.5 Billard, 1997
Alosa fallax 3-5 4.0 Bruslé and Quignard, 2001
Alosa fallax 4-5 [mode, but between 2-8] 4.5 Mennesson-Boisneau et al, 2000
Alosa fallax 4-6 [Female specified] 5.0 Maitland and Lyle, 2005
Alosa fallax Mean age of 5.6 for female 5.6 Doherty et al, 2004
Alosa fallax From 2 to 9 years with females mainly at 4-5 years 4.5 Aprahamian et al, 2001
Alosa fallax The females do not start to mature until they are about five years old 5.0 Maitland and Hatton-Ellis, 2000
Alosa fallax Between 3-4 and 4-5 depedning on populations [Sex not specified] 3.5 Bensettiti and Gaudillat, 2002
Alosa sapidissima 4-5 [Not specified] 4.5 Scott and Crossman, 1973
Alosa sapidissima 2-5 [Female] 3.5 Fishbase, 2006
Alosa sapidissima 4-5 [Female] 4.5 Mills, 2004
Alosa sapidissima 4-5 [Female] 4.5 Olney and McBride, 2003
Alosa sapidissima 4-5 [Female] 4.5 Anonymous, 2006 Chapter 3
Alosa sapidissima Most american shad mature and return to spawn at betwenn 3 and 5 years of age [Not specified] 3.0 Burdick and Hightower, 2005
Alosa sapidissima 4.2-4.5 [Female] 4.35 Carscaden and Legget, 1975
Alosa sapidissima The annual spawning run of American shad Alosa sapidissima in the York River, Virginia consists of virgin (ages 3-7 years) and fish that spawned in previous years (repeat spawners, ages 4-10) 5.0 Olney et al, 2006
Aphanius iberus 1 [Sex not precised] 1.0 Keith, 2001
Aphanius iberus Before 1 [Both sex] 1.0 Vargas and De Sostoa, 1997
Aphanius iberus 0.4 [4 months, age at maturation] 0.4 Vila-Gispert and Moreno-Amich, 2002
Aphanius iberus 1 [Not specified] 1.0 Maitland, 1977
Aphanius iberus From April to July, 1+ group specimens (7-12 months old) reproduced. Their offspring (0+ group; 3-4 months) reproduced) from July to September. 9.5 Fernandez-Delgado et al, 1988
Valencia hispanica 1 [Sex not specified] 1.0 Keith, 2001
Valencia hispanica 1+ [Female specified] 1.0 Caiola et al, 2001
Valencia hispanica Before 1 year 1.0 Maitland, 1977
Barbatula barbatula 1-2 1.5 Skryabin, 1993
Barbatula barbatula 1-2 1.5 Bruslé and Quignard, 2001
Barbatula barbatula 2 2.0 Saat et al, 2003
Barbatula barbatula 2-3 [Mixed] 2.5 Fishbase, 2006
Barbatula barbatula 2-3 [No specified] 2.5 Environment agency, ???
Barbatula barbatula In Finland, the stone loach usually matures at the age of two years, those slower in development at the age of 3 years [Sex not specified] 1.0 Sauvonsaari, 1971
Cobitis taenia Most males and females become sexually mature in their second spring after hatching 2.0 Marconato and Rasotto, 1989
Cobitis taenia 4 4.0 Vaino and Saat, 2003
Cobitis paludica Beginning of 2 year [Both sex specified] 2.0 Oliva-Paterna et al, 2002
Cobitis paludica 2-3 [Most at 3, but some as 1, female] 2.5 Soriguer et al, 2000
Cobitis paludica 1 [12 months, age at maturation] 1.0 Vila-Gispert and Moreno-Amich, 2002
Blicca bjoerkna 2-4 [Sex not specified] 3.0 Rinchard, 1996
Blicca bjoerkna 2-4 [Sex not specified] 3.0 Kestemont, 2001
Blicca bjoerkna 4 [Female in Finland] 4.0 Fishbase, 2006
Blicca bjoerkna 4-5 [Female] 4.5 Environment agency, ???
Blicca bjoerkna Females and some males reach maturity at an age of 4 years 4.0 Hansen, 1980
Abramis brama 3-4 [Southern Europe], 6-10 [Nothern Europe] 3.5 Backiel and Zawiska, 1968
Abramis brama Fish of 4+ to 15+ took part in spawning. The bulk of spawning females was 9+ 4.0 Shestopalova, 1978
Abramis brama Female bream attain maturity in their sixth year of life (V+) 6.0 Cowx,1983
Abramis brama 3 [Rarely 2] 3.0 Sokolova, 1990
Abramis brama 4-6 [Both sex] 5.0 Molls, 1999
Abramis brama 3-4 [Southern Europe], 5-7 [Nothern Europe] 3.5 Bruslé and Quignard, 2001
Abramis brama Age of sexual maturation varies from 2 to 11 years to population. 2.0 Brylinska and Boron, 2004
Abramis brama 3-4 [Mass maturation, but rarely at 2] 3.5 Sidorova, 2005
Abramis brama 4-6 [Not specified] 5.0 Environment agency, ???
Abramis brama Female breams reach sexual maturity in Vortsjärv at (6)7-10(11) years old 8.5 Noges and Järvet, 2005
Abramis brama Bream females in Lake Sniardwy attain sexual maturity at the age of six, seven years […] It may be concluded that 6 and 7-years old females spawned for the first or second time in their life 6.0 Kopiejewska, 1989
Abramis brama Other studies: 50% of the females matured having attained TL = 39 cm (SL= 30.5 cm) at the age of 8 years. […] Bream inhabiting the Rybinsk reservoir on the Volga to be sexually mature when older than 7 years, when 9.3% of the individuals were mature, at the average length of 27.4 cm. At the age of 9 years, almost half (48.1%) of all the individuals were mature, at the average length of 32.0 cm. All the bream (100%) were mature as last as in their 13th year of life, having attained a mean length of 38.4 cm 50.0 Neja and Kompowski, 2001
Alburnoides bipunctatus 2 2.0 Yildirim et al, 1999
Alburnoides bipunctatus 1-2 [Sex not precised] 1.5 Coad, 2005
Alburnus alburnus 2-3 [Sex not precised] 2.5 Rinchard, 1996
Alburnus alburnus 2 [Sex not precised] 2.0 Bruslé and Quignard, 2001
Alburnus alburnus 1-4 [Sex not specified] 2.5 Carrell and Olivier, 2001
Alburnus alburnus 3+ [females] 3.0 Environment agency, ???
Alburnus alburnus It matures in 2 or 3 years of age [Not specified] 2.0 Winnicki and Korzelecka, 1997
Alburnus alburnus 1-2 (4) years [Sex not specified] 1.5 Agence de l'eau,
Aristichthys nobilis Most (81%) at 6-7 [Some at 5] 6.5 Abdusamadov, 1986
Aristichthys nobilis Differ between regions from 3-4 [South China and Taiwan] to 6-7 [Northeast China, Israel] to 10 [Moscow] 3.5 Jennigs, 1988
Aristichthys nobilis 5-7 6.0 Horvath et al, 1992
Aristichthys nobilis Reach sexual maturity at ages 3 through 9 depending on the environmental conditions [Both sex] 3.0 Schrank, 1999
Aristichthys nobilis 3-4 in tropical conditions [Both sex], but 6-8 in temperate conditions 3.5 Kolar et al, 2005
Aspius aspius 4 4.0 Shikhshabekov, 1979
Aspius aspius 4-5 [Danube] 4.5 Bruslé and Quignard, 2001
Aspius aspius 3-5 [Sex not specified] 4.0 Keith and Allardi, 2001
Aspius aspius 4-5 [Female] 4.5 Kompowski et Neja, 2004
Aspius aspius About 4 [Sex not specified] 4.0 Bensettiti and Gaudillat, 2002
Barbus barbus 7-8 7.5 Bruslé and Quignard, 2001
Barbus barbus 8 8.0 Philippart, 1987
Barbus barbus 6 [72 months, age at maturation] 6.0 Vila-Gispert and Moreno-Amich, 2002
Barbus barbus 4-5 [Female] 4.5 Fishbase, 2006
Barbus barbus 5-8 [Female] 6.5 Environment agency, ???
Barbus barbus 7-8 [Female] 7.5 Baras and Philippart, 1999
Barbus barbus 7-8 [Female] 7.5 Baras , 1993
Barbus barbus 8-9 [Female] 8.5 Poncin, 1984
Barbus barbus 50% of the female are mature in their sixth year, 40% in their seventh year and 100% in their > eighth 50.0 Lobon-Cervia and Fernandez-Delgado, 1984
Carassius auratus 2 [In France, only if water display a temperature of 20 or more] 2.0 Spillmann, 1961
Carassius auratus 2-3 2.5 Internet, 2005
Carassius auratus 1-2 [sex not specified] 1.5 Scholfield, 2005
Carassius auratus 3.5 [Both sex] 3.5 Olden et al, 2006
Carassius auratus Usually at 2 in our latitudes, sex not specified 2.0 Kestemont and Mélard, 1994
Carassius auratus In their natural area of distribution goldfish mature at the age of 1-2 years 1.5 Sczerbowski and Szczerbowski, 1996
Carassius carassius From 2 to 4 according to latitudes 2.0 Bruslé and Quignard, 2001
Carassius carassius 3-4 [Not specified] 3.5 Environment agency, ???
Carassius carassius 2-5 [Not specified] 3.5 Scholfield, 2005
Carassius carassius In the Changjiang River and Yellow River basins, generally reach maturity at 2 years. In northeastern China, sexual maturity arrives later when the fish is larger 2.0 Naca, 1989
Carassius carassius Crucian carp mature at the age of 3-5 years, usually 4 years. Typically males mature a year earlier than females. Maturation is reached earlier in the regions situated near the sourthern limit of the distribution area. In Roumania fish maturing in their second year of life were observed, whereas in Northern Russia - in fifth. Because of better nutritional conditions in ponds, maturation is earlier than in natural water bodies 4.0 Sczerbowski and Szczerbowski, 1996
Chondrostoma nasus 4-7 5.5 Bruslé and Quignard, 2001
Chondrostoma nasus 4-7 [Sex not specified] 5.5 Nelva, 2001
Chondrostoma nasus Females in spawning conditons caught on the spanwing ground have a mean age of 9.3, range of 6-12 9.0 Keckeis et al, 2000
Chondrostoma nasus Nase mature at third year of life. Their first spawning is at that age 3.0 Prawochenski, 1964
Chondrostoma toxostoma 4 4.0 Bruslé and Quignard, 2001
Chondrostoma toxostoma 3-4 [Sex not specified] 3.5 Gozlan and Chappaz, 2001
Chondrostoma toxostoma 4 [48 months, age at maturation] 4.0 Vila-Gispert and Moreno-Amich, 2002
Chondrostoma toxostoma 4 [Not specified] 4.0 Bensettiti and Gaudillat, 2002
Chondrostoma toxostoma At four years inVerdon (France), sex not specified 4.0 Internet
Ctenopharyngodon idella 5-7 6.0 Horvath et al, 1992
Ctenopharyngodon idella 4-5 4.5 Bruslé and Quignard, 2001
Ctenopharyngodon idella 5 [Sex not specified] 5.0 Le Houarn, 2001
Ctenopharyngodon idella 5.0 5.0 Abdusamadov, 1986
Ctenopharyngodon idella 1-2 [Malaysia] to 6-10 [Russia Fed, Germany], female specified 1.5 Fishbase, 2006
Ctenopharyngodon idella 2 to 4, up to 6-10 in their natural range, and 4-5 in the United States, and 1-8 in the introduced countries [Sex not specified] 8.0 Cudmore and Mandrak, 2004
Ctenopharyngodon idella 2-5 years in subtropical/tropical areas and 4-7 years in temperate regions [Sex not specified] 3.5 Scholfield, 2005
Ctenopharyngodon idella 4.5 [Both sex] 4.5 Olden et al, 2006
Ctenopharyngodon idella The grass carp investigated for fecundity were between 7+ and 15+ 7.0 Gorbach, 1972
Ctenopharyngodon idella Maturity occurs at ages from 1 to 11 years in females 1.0 Shireman and Smith, 1983
Cyprinus carpio 4-5 4.5 Horvath et al, 1992
Cyprinus carpio 3 3.0 Bruslé and Quignard, 2001
Cyprinus carpio 4-5 4.5 Bieniarz et al, 1978
Cyprinus carpio 4 4.0 Billard, ???
Cyprinus carpio 3 [Female] 3.0 Lafaille and Crivelli, 2001
Cyprinus carpio 2-3 [24-36 months, age at maturation] 2.5 Vila-Gispert and Moreno-Amich, 2002
Cyprinus carpio 4-5 [Females] 4.5 Environment agency, ???
Cyprinus carpio 4.5 [Both sex] 4.5 Olden et al, 2006
Cyprinus carpio The common carp becomes sexualy mature in the Romanian Danube River at the age of 4 years for female 4.0 Ciolac, 2004
Cyprinus carpio Under the climatic conditions in Poland, female carp reach sexual maturity at the age of 4-5 years 4.5 Bieniarz et al, 1979
Cyprinus carpio In temperate climates, sexual maturity is reached at the age of 3-4 years 3.5 Dubost et al, 1997
Cyprinus carpio In tropical climates, carp mature at 3-6 months, and in temperate climates at 3-5 years. Males mature earlier than females 4.5 Smith and Walker, 2004
Cyprinus carpio In the Changjiang River and Yellow River basins, generally reach maturity at 2 years. In northeastern China, sexual maturity arrives later when the fish is larger 2.0 Naca, 1989
Cyprinus carpio In Victoria, males and females mature at 1 and 2 years of age. In tropical climates, carp mature at 3-6 months. In temperate-mediterranean climates, the age-at-maturity varies between 1 and 5 years. 4.5 Smith, 2004
Gobio gobio 2-3 [Both sex] 2.5 Kennedy and Fitzmaurice, 1972
Gobio gobio 3 3.0 Bruslé and Quignard, 2001
Gobio gobio 2 [Sometimes 1, rarely 3-4, Box sex] 3.5 Rosechhi and Kestemont, 2001
Gobio gobio 2-3 [Female] 2.5 Fishbase, 2006
Gobio gobio 1 [Bot sex] 1.0 Rosecchi et al, 2001
Gobio gobio 1-2 [12-24 months, age at maturation] 1.5 Vila-Gispert and Moreno-Amich, 2002
Gobio gobio 2-3 [Not specified] 2.5 Environment agency, ???
Gobio gobio Nearly all fish were mature at the end of their third year, and approximatively 89% from females and 74% Stour females spawnerd after two years 3.0 Mann, 1980
Gobio gobio Celle-ci peut-être atteinte dès le second été (1+) chez les groupes qui mesurent 90 à 100 mm de longueur. […] 50% seulement des femelles de goujons 1+ sont aptes à se reproduire. Toutes les femelles 2+ sont aptes à la reproduction 2.0 Brunet and Hoestlandt, 1972
Hypophthalmichthys molitrix 5-7 6.0 Horvath et al, 1992
Hypophthalmichthys molitrix 5, but most 7-8, females 7.5 Abdusamadov, 1986
Hypophthalmichthys molitrix 3-6 [China, unsexed] 4.5 Fishbase, 2006
Hypophthalmichthys molitrix 3-4 but up to 5-6 3.5 Kolar et al, 2005
Hypophthalmichthys molitrix The broodstock analyzed is 5th - 6th generation reproduced artificially 5.0 Verigin et al, 1990
Leucaspius delineatus 1 [Female] 1.0 Le Louarn, 2001
Leucaspius delineatus Sexual maturity is attained at the age of two years (both males and females) 2.0 Bonislawska et al, 1999
Leuciscus cephalus 2-5 [Female] 3.5 Kalkan et al, 2005
Leuciscus cephalus 3 but sometimes 5-8 6.5 Bruslé and Quignard, 2001
Leuciscus cephalus 3 3.0 Unlu and Balci, 1993
Leuciscus cephalus 3 [Female] 3.0 Changeux and Le Louarn, 2001
Leuciscus cephalus 4-7 Female] 5.5 Fishbase, 2006
Leuciscus cephalus 2-7 in six different populations from south to north [24-84 months, 84 in England, age at maturation] 4.5 Vila-Gispert and Moreno-Amich, 2002
Leuciscus cephalus Females and males first attained sexual maturity in their second year 1.0 Sasi, 2003
Leuciscus cephalus 4-5 [Female] 4.5 Poncin et al, 1987
Leuciscus cephalus Most females are mature at age VII and some at V or VI 7.0 Mann, 1976
Leuciscus cephalus Females matured in their third or fourth year of life. Other studies indicated that the sexual maturity age in the chub population of the Black Sea basin is III. The maturity age of chub was found to be III in the females and II in the males, however it was determined to be IV in the females and III in the males 3.0 Ünver, 1998
Leuciscus cephalus In Poland, chub usually reach maturity at the age of 3-4 years. Females maturing at the age of 6 years in the river Stobnica. 28% of chub reached maturity at the age 3+, and 60% at the age 4+. In other countries 3-4 year period of maturation was reported. 3.5 Zelepien, 1997
Leuciscus cephalus With the exception of a small proportion of females (2.23% which mature in their second year), all females matured sexuallyduring their thrid-fifth year of life. 80.22 in their third year, 90.5% in their fourth year, 96.5% in their fifth year and 100% in their sixth year and after 2.23 Erdogan et al, 2002
Leuciscus idus 2-5 [Sex no specified] 3.5 Kestemont, 2001
Leuciscus idus 5-6 [Female] 5.5 Fishbase, 2006
Leuciscus idus In southern and central Europe, first spawning-ide are age 3-5 years, sometimes they are 2 years old. In eastern Europe, reproductive period begins at the age of 4 and 5 years. More precisely 6 years [Kävlingean], 5 years [Dniepr], (3) 4 [Dunaj] 4.0 Witkowski et al, 1997
Leuciscus idus Between 2-5 years [Sex not specified] 3.5 Kestemont and Mélard, 1994
Leuciscus leuciscus 2 but 3-4 [Sex not precised] 3.5 Bruslé and Quignard, 2001
Leuciscus leuciscus 3 [Female] 3.0 Fishbase, 2006
Leuciscus leuciscus 2 [48 months, age at maturation] 2.0 Vila-Gispert and Moreno-Amich, 2002
Leuciscus leuciscus 3-4 [Not specified] 3.5 Environment agency, ???
Leuciscus leuciscus The smallest female about to spawn was 5 years old [Siberia, 3-5 Not specified for various populations] 4.0 Lobon-cervia et al, 1996
Leuciscus leuciscus 3-4, yet mostly at 4 [Female] 3.5 Mann, 1974
Leuciscus leuciscus Both sex reach sexual maturity after four years growth, although some fast-growing individuals may do so after three years 4.0 Mann and Mills, 1985
Leuciscus leuciscus 2-5 [Sex not specified] 3.5 Kestemont and Mélard, 1994
Mylopharyngodon piceus 6-11 [sex not specified] 8.5 Crosier et al, 2005
Mylopharyngodon piceus 4-5 [Female] 4.5 Fishbase, 2006
Phoxinus phoxinus 2-3 2.5 Spillmann, 1961
Phoxinus phoxinus 2-3 2.5 Bruslé and Quignard, 2001
Phoxinus phoxinus 2-3 [Female] 2.5 Kestemont, 2001
Phoxinus phoxinus 1-2 [Male and female] 1.5 Mills, 1987
Phoxinus phoxinus 2 and in very favourable conditions 1 [Both sex] 2.0 Papadopol and Weinberger, 1975
Phoxinus phoxinus 3 but most 4-5 [Both sex in subalpine lake] 4.5 Museth et al, 2002
Phoxinus phoxinus 3 [36 months, age at maturation] 3.0 Vila-Gispert and Moreno-Amich, 2002
Phoxinus phoxinus 2-3 [Not specified] 2.5 Environment agency, ???
Phoxinus phoxinus Most minnows reach sexual maturity in 3 years of age 3.0 Soin et al, 1982
Phoxinus phoxinus The minnows reached 50.9 mm fork length by their second birthday, wich was the age of first maturity. The sexes did not differ significantly either in length or numbers in the first three age-classes 50.9 Mills and Eloranta, 1985
Phoxinus phoxinus At the dowstream site the one 4-year-old female captured (49.0 mm) was immature but all 27 5-year-old (52.6-65.0 mm) and 48 older females were mature 58.8 Mills, 1988
Phoxinus phoxinus Female are generally mature a year after males, at 2-3 years 2.5 Kestemont and Mélard, 1994
Pimephales promelas Females may mature in second summer 2.0 Kerr and Grant, 1999
Pimephales promelas As low as 2-3 months for male and female 2.5 Markus, 1934
Pseudorasbora parva 1 [Sex not precised] 1.0 Bruslé and Quignard, 2001
Pseudorasbora parva 1-2 [Sex not specified] 1.5 Rossechi et al, 2001
Pseudorasbora parva 1 [Not specified] 1.0 Fishbase, 2006
Pseudorasbora parva Spawns when one year old 1.0 Witkowski, 2006
Pseudorasbora parva In their second year of life (sex not specified) 2.0 Boltachev et al, 2006
Rhodeus sericeus 1 [Both sex] 1.0 Smith et al, 2004
Rhodeus sericeus 1 1.0 Bruslé and Quignard, 2001
Rhodeus sericeus 1 [Sex not precised] 1.0 Oliver and Carrel, 2001
Rhodeus sericeus 2-3 [Unsexed] 2.5 Fishbase, 2006
Rhodeus sericeus 1 [Both sex] 1.0 Rosecchi et al, 2001
Rhodeus sericeus 1 [Both sex for amarus] 1.0 Bensettiti and Gaudillat, 2002
Rutilus rutilus 3 3.0 Rinchard, 1996
Rutilus rutilus 3-4 [Sex specified] 3.5 Mann, 1973
Rutilus rutilus 3-4 : minimal age (with n=3232) 3.5 Spivak et al, 1979
Rutilus rutilus 3-4 [Female] 3.5 Le Houarn et al, 2001
Rutilus rutilus 3 [Female] 3.0 Fishbase, 2006
Rutilus rutilus The first females spawned at age 3, all females older than age 5 are mature 1.0 Vollestad et al, 1987
Rutilus rutilus 2+ 2.0 Papageorgiou, 1979
Rutilus rutilus 3 in height different populations from south to north [30-36 months, age at maturation] 33.0 Vila-Gispert and Moreno-Amich, 2002
Rutilus rutilus 3-5 [Females] 4.0 Environment agency, ???
Rutilus rutilus The sizes at 50% maturity correponds to 3 years of age for both sexes of roach [Review from other populations: 3, 2, 2-3, 3-4, 3, 3, 3, 3, 3,3 ,3 ,3, 2, 4.5, 2 and 5] 2.5 Tarkan et al, 2006
Rutilus rutilus The first sexually mature females were found to be aged 2 (age group III); the roach spawned after three winters of their life. [Other studies: 85% of roach females in age group II took part in spawning. Most authors however have shown that roach females spawned in age group III. Attainment of sexual maturity in age group IV for the first time was also reported, the age 3 to 4] 1.0 Libovarsky et al, 1985
Rutilus rutilus The youngest maturing females seen were age 3+ 3.0 Mackay and Mann, 1969
Rutilus rutilus Female first time spawners are older, 3(4)-5(6) years 1.0 Noges and Järvet, 2005
Rutilus rutilus All female fish of 4 yr or older from both reference sites in the autumn were undergoing sexual maturation 4.0 Jobling et al, 2002b
Rutilus rutilus 3-4 years for females 3.5 Paull et al, 2008
Scardinius erythrophthalmus 3-4 3.5 Shikhshabekov, 1979
Scardinius erythrophthalmus 2-3 [Age not precised] 2.5 Bruslé and Quignard, 2001
Scardinius erythrophthalmus 2-3 [Age not precised] 2.5 Lafaille et al, 2001
Scardinius erythrophthalmus 5 [Unsexed] 5.0 Fishbase, 2006
Scardinius erythrophthalmus 2 [24 months, age at maturation] 2.0 Vila-Gispert and Moreno-Amich, 2002
Scardinius erythrophthalmus 3-4 [Not specified] 3.5 Environment agency, ???
Scardinius erythrophthalmus The sizes at 50% maturity correponds to 1 year of age for both sexes of roach [review from other populations: 1, 1-2, 3, 2, 3-4, 2, 3] 1.5 Tarkan et al, 2006
Scardinius erythrophthalmus Females generally mature at age 2 2.0 Hicks, ???
Tinca tinca 3-7 5.0 Horvath et al, 1992
Tinca tinca From 3 [Sex not specified] 3.0 Feunteun et al, 2001
Tinca tinca Mostly at 4, some at 3 for females 4.0 Yilmaz, 2002
Tinca tinca 4-7 [Minimal age of female for optimal reproduction] 5.5 Linhart and Billard, 1995
Tinca tinca 3-5 [Not specified] 4.0 Environment agency, ???
Tinca tinca Female attainted maturity in their fourth year 4.0 Alas and Solak, 2004
Tinca tinca In climatic conditions of Czech Republic tench mature in the second-fourth year of life. Males usually mature in the second year (third) year of life. Females mature a year later than males. Tench reared in fish ponds mature earlier than tench from rivers or dam reservoirs situated at the same altitude. 3.0 Kubu and Kouril, 1985
Tinca tinca They were aged 3 to 7 years 3.0 Pimpicka, 1991
Vimba vimba 3 3.0 Shikhshabekov, 1979
Vimba vimba 3 3.0 Bruslé and Quignard, 2001
Vimba vimba 2-3 2.5 Coad, 2005
Vimba vimba 4-5 4.5 Hliwa and Martyniak, 2002
Vimba vimba 5 and more 5.0 Hliwa et al, 2002
Vimba vimba 3-4 [Sex not specified] 3.5 Keith and Allardi, 2001
Vimba vimba 3 [Unsexed] 3.0 Fishbase, 2006
Vimba vimba 3-4 [Not specified] 3.5 Maitland, 1977
Vimba vimba Marked inhibition of the growth rate of the body length took place after the fifth year of life, thus after reaching sexual maturity, this being usually more pronounced in females 5.0 Wajdowicz, 1974
Vimba vimba Vimba mature in the 2nd and 3rd year of life. The caspian vimba matures at the age of 3. Fish of age 2-5 participate in spawning, and 4-year-old fish are predominant in the spawning population. 3.5 Kuliev, 1988
Vimba vimba females become mature at the age 6. A common age of spawning vimba is 6-7 years 6.5 Kesminas et al, 1999
Vimba vimba The rapid growth facilitates an early maturation of the vimba: both males and females become sexually mature at the age of 3-5 years 4.0 Ermolin and Shashulovskii, 2006
Vimba vimba The fourth age group almost exclusively comprised males, females being rarely encoutered. This indicates that males reach the maturity state in their fourth year of life, i.e., a year earlizer than females 4.0 Trzebiatowski and Narozanski, 1973
Vimba vimba Under natural conditions, vimba becomes sexually mature at 4-5 years of age, although 3-year-old females have been found in spawning schools in the moutain tributaries of the Vistula River; in the Vistula lagoon, wimba first enter reproduction at the age of 7-8 years 4.5 Luszczek et al, 2008
Gambusia affinis 0.4 0.4 Bruslé and Quignard, 2001
Gambusia affinis 0.4 [4 months, age at maturation] 0.4 Vila-Gispert and Moreno-Amich, 2002
Gambusia affinis 0.1 [Both sex] 0.1 Olden et al, 2006
Esox masquinongy 5-7 6.0 Crossman, 1990
Esox masquinongy 3-5 [No apparent difference in age at attainment of maturity] 4.0 Scott and Crossman, 1973
Esox masquinongy 5-7 6.0 Farrell et al, 2005
Esox masquinongy Muskellunge are sexually mature between 3 and 5 years of age, and males mature before females 3.0 Clemmons and Newman, 1997
Esox niger 3-4 [Both sex] 3.5 Scott and Crossman, 1973
Esox niger 3-4 [Female] 3.5 Anonymous, 2006
Esox lucius 3-4 [Sex specified] 3.5 Hovarth et al, 1992
Esox lucius 2-3 [Sometimes up to 5-6] 2.5 Billard, 1996
Esox lucius 2-3 [4 years in more Southern region] 2.5 Bruslé and Quignard, 2001
Esox lucius 2-3 [Sex specified] 2.5 Toner and Lawler, 1969
Esox lucius 2 [Sex specified, rarely 1] 2.0 Frost and Kipling, 1967
Esox lucius 2-3 [Both sex, but sometimes 1] 2.5 Souchon, 1983
Esox lucius 3 [Female] 3.0 Le Louarn and Feunteun, 2001
Esox lucius 3-4 in the south and 6 in the north [Female] 3.5 Scott and Crossman, 1973
Esox lucius 3 [31-36 months, age at maturation] 33.5 Vila-Gispert and Moreno-Amich, 2002
Esox lucius 2-3 [Both males and females] 2.5 Environment agency, ???
Esox lucius 2.0 [Both sex] 2.0 Olden et al, 2006
Esox lucius In Labrador, pike generally mature at 3-5 years [Sex not specified] 4.0 Bradbury et al, 1999
Esox lucius All females were mature at age 3 and a proportion in both lakes was mature at age 2 [in toher studies, range between from 1/4, 2 and 2/3] 3.0 Treasurer, 1990
Lota lota 4+ 4.0 Van Houdt, 2003
Lota lota 3 3.0 Bruslé and Quignard, 2001
Lota lota Usually in the 3-4 [Both sex] 3.5 Scott and Crossman, 1973
Lota lota 4 4.0 Fishbase, 2006
Lota lota 7+ [Lowest age] 7.0 Vedeneev et al, 2003
Lota lota In Canada, burbot generally reach sexual maturity between 2-8 years of age [sex not specified] 5.0 Bradbury et al, 1999
Lota lota 3-4 [Sex not specified] 3.5 Anonymous, 2003
Lota lota Some burbot are probably sexuallu mature when 2 years old, and immaturity seems to be associated more with size than with age 2.0 Hewson, 1955
Lota lota First spawning females are 4 years old, a year older than males 4.0 Kujawa et al, 2002
Lota lota Burbot matured in Lake Cle Elum at 2-4 years (28-43 cm TL). In Palmer Lake, all mature males were six years or older and mature females seven years or older (54 and 64 cm TL, respectively). Most burbot matured at 3-4 years of age in three Wyoming lakes, and two years in Lake Winninpeg 3.0 Bonar et al, 2000
Gasterosteus aculeatus 1-2 [Both sex] 1.5 Fishbase, 2006
Gasterosteus aculeatus 1 [Both sex] 1.0 Scott and Crossman, 1973
Gasterosteus aculeatus 1-2 [Not specified] 1.5 Environment agency, ???
Gasterosteus aculeatus 2-3 [Not specified] 2.5 Bradbury et al, 1999
Pungitius pungitius 1 [Sex not precised] 1.0 Bruslé and Quignard, 2001
Pungitius pungitius 1 [Sex not precised] 1.0 Lafaille and Feunteun, 2001
Pungitius pungitius 1-2 [Unsexed] 1.5 Fishbase, 2006
Pungitius pungitius 2 [Adult female] 2.0 Heins et al, 2003
Pungitius pungitius 1 [Not specified] 1.0 Environment agency, ???
Pungitius pungitius Mean or most common values and ranges in parenthses => 2+ in Alaskan Lake; 1+ (2+) in Québec river, 2+ in Québec Lake; 2+ (1-5+) in Lake Superior USA; 1+ (2-3) in English stream 3.0 Heins et al, 2003
Ambloplites rupestris 2-3 [Sex not specified] 2.5 Carrel et al, 2001
Ambloplites rupestris 3.0 [Sex not specified] 3.0 Olden et al, 2006
Lepomis gibbosus 2-3 [Sex not specified] 2.5 Internet, 2005
Lepomis gibbosus 2-3 [Female specified, most at 3, quite rare at 2] 2.5 Danylchuk and Fox, 1994
Lepomis gibbosus 4 [Female specified but possible at 1 year] 4.0 Carrel et al, 2001
Lepomis gibbosus 2 [Not specified] 2.0 Scott and Crossman, 1973
Lepomis gibbosus 2 [Mixed] 2.0 Fishbase, 2006
Lepomis gibbosus From 1.4 to 3.9 in Europe, 3-5 in their study [Both sex] 4.0 Copp et al, 2002
Lepomis gibbosus Mean age at maturity of females between 1.3-2.3 [In warm thermal environments] 1.8 Fox and Crivelli, 2001
Lepomis gibbosus 1.5-2 [18-24 months, age at maturation] 1.75 Vila-Gispert and Moreno-Amich, 2002
Lepomis gibbosus 2.5 [Both sex] 2.5 Olden et al, 2006
Lepomis gibbosus Fish of both sexes began maturing in Lower Beverley Lake at age three and that more then 50% were mature at age six 3.0 Deacon and Keast, 1987
Lepomis gibbosus Female mean age at maturity: 3.4 years [Ontario Lakes, Canada], 3.9 years [Cottesmore Pond, England], 1.8 year [Rhône River, Delta canals, France], 1.0 [Mirgenbach Reservoir, Moselle, France] 3.4 Dembski et al, 2006
Micropterus dolomieui 2-4 [Sex not specified] 3.0 Internet, 2005
Micropterus dolomieui 4 [Female] 4.0 Fishbase, 2006
Micropterus dolomieui 4-6 [Female] 5.0 Scott and Crossman, 1973
Micropterus dolomieui 3-4 years [Sex not specified] 3.5 Kerr and Grant, 1999
Micropterus dolomieui 3.5 [Both sex] 3.5 Olden et al, 2006
Micropterus salmoides 3-5 (less than one year in tropical or subtropical regions) 4.0 Heidinger, 1976
Micropterus salmoides At least 2 years 2.0 Newburg, 1975
Micropterus salmoides May mature at 8 months in the southern U.S. 8.0 Williamson et al, 1993
Micropterus salmoides 2-5 [Sex not specified] 3.5 Bruslé and Quignard, 2001
Micropterus salmoides 2-3 [Sex not specified] 2.5 Carrel and Schlumberger, 2001
Micropterus salmoides 3-4 [Female] 3.5 Scott and Crossman, 1973
Micropterus salmoides 2 [24 months, age at maturation] 2.0 Vila-Gispert and Moreno-Amich, 2002
Micropterus salmoides 2.5 [Both sex] 2.5 Olden et al, 2006
Micropterus salmoides Reproduction occurred in all populations of bass of age 2 2.0 Jonhson and McCrimmon, 1967
Dicentrarchus labrax 3 3.0 Papadaki et al, 2005
Dicentrarchus labrax 4-5 [Female in Meditterranean Sea] and 5-8 [Off Irlande] 4.5 Zohar et al, 1984
Dicentrarchus labrax 3 [Unsexed] 3.0 Fishbase, 2006
Dicentrarchus labrax 2-3 [Female specified] 2.5 Secor, ???
Dicentrarchus labrax 5-8 [Great Brittany], 6 [Arcachon, France], 3 [Sète, France] and 4-5 [Tunisia] 6.5 Barnabé, 1980
Dicentrarchus labrax Bass in British waters mature for the first time at 4-7 years (about 35 cm total length), with males generally maturing before females 5.5 Mayer et al, 1988
Morone americana 76% mature at 2, and 100% at 3 76.0 Sheri and Power, 1968
Morone americana Most females mature at 2, some at 3 and all at 4 2.0 Stanley and Danie, 1983
Morone americana 5 in females 5.0 Everly and Boreman, 1999
Morone americana Among the females, all were sexually mature from age group IV and older, but immature fish were found among the first three age groups. None, of course, were sexually mature in age group I. Within age groups II and III sexual maturity seemed to be related to size rather than ag. the bulk of the mature sample, nevertheless, is concentrated in age group III in these two groups. 1.0 Mansuetti, 1961
Morone chrysops 3 [Sex specified] 3.0 Internet, 2005
Morone chrysops About 2 [Female] 2.0 Berlinsky et al, 1995
Morone chrysops Some mature at 3, and all at 4 3.0 Ruelle, 1977
Morone chrysops Usually 3 [Female] 3.0 Kohler, 1997
Morone chrysops Most bass mature at 3 [Not specified] 3.0 Anonymous, 2006 Chapter 3
Morone chrysops 2.0 [Both sex] 2.0 Olden et al, 2006
Morone chrysops At 2 years of age in reared conditions, all female were mature 2.0 Smith et al, 1996
Morone saxatilis Most of the studies indicate that females do not mature until at least 4 years, and, in most cases, not until 5 years of age 4.0 Will et al, 2002
Morone saxatilis 4-7 [Female] 5.5 Fishbase, 2006
Morone saxatilis >4 4.0 Berlinsky et al, 1995
Morone saxatilis 3-5 4.0 Sullivan et al, 1997
Morone saxatilis Spawn for the first time at 3 to 6 years of age [Not specified] 1.0 Burdick and Hightower, 2005
Morone saxatilis 5.5 [Both sex] 5.5 Olden et al, 2006
Morone saxatilis 5-8 [Female specified] 6.5 Secor, ???
Morone saxatilis A few of the female striped bass become mature by the end of their 3rd year, while the majority attain maturity at the end of their 4th year 3.0 Merriman, 1937
Morone saxatilis In 1976: female were mature at age VI (47%), VII (87%), VIII (90%), IX (100) 1976.0 McLaren et al, 1981
Morone saxatilis About 44% of age-3 females were sexually mature and that all females examined were mature by age 6 [Female stripped bass from the Atlantic coast of the USA mature mainly at age 5-6, yet some mature at 3-4] 5.5 Olsen and Rulifson, 1992
Morone saxatilis All females whose age at next potential spawning was and older were mature. Our empirical observations indicated that 12% of fish in age-class 4, 34% of fish in age-class 5, and 77% of fish in age-class 6 were mature 10.0 Berlinsky et al, 1995b
Morone saxatilis In the mid-Atlantic region, females mature between 3 to 7 years 3.0 Holland et al, 2000
Gymnocephalus cernua 2-3 but sometimes 1 [Sex not specified] 2.5 Ogle, 1998
Gymnocephalus cernua 2 [Sex not specified] 2.0 Bruslé and Quignard, 2001
Gymnocephalus cernua 2 [Part of the population at 1] 2.0 Kovac, 1998
Gymnocephalus cernua 1-3 [Sex not specified] 2.0 Crivelli and Rosecchi, 2001
Gymnocephalus cernua 1-2 1.5 Fishbase, 2006
Gymnocephalus cernua 2 [Not specified] 2.0 Environment agency, ???
Gymnocephalus cernua 2-3 [Not specified] 2.5 Maitland, 1977
Gymnocephalus cernua All the individuals caught before spawning and belonging to age group 2 and older groups had their gonads at stage 4 or 5, that is they were ready to the nearest spawning. One may infer that some individuals spawn as early as at age 1+. In Poland, it marres at the end of its second year of life. In the river Nadym drainage, it matures at age 2 (usually hower, 3+ or 4+) 2.0 Neja, 1988
Perca flavescens 2 [Rare, most at 3-4] 3.5 Heidinger and Kayes, 1986
Perca flavescens 3-4 [Sex specified] 3.5 Dabrowski et al, 1996
Perca flavescens 4 [Sex specified] 4.0 Scott and Crossman, 1973
Perca flavescens Female reach sexual maturity during their third or fourth summer 3.0 Kerr and Grant, 1999
Perca flavescens 2-3 [Female] 2.5 Anonymous, 2006 Chapter 3
Perca flavescens 2.0 [Both sex] 2.0 Olden et al, 2006
Perca flavescens Except fot two age II females taken in the summern all fish older than age I were mature 2.0 Brazo et al, 1975
Perca flavescens The largest immature females from the stunded population attained just over 10% of the weight of the smallest normal females which had reached maturity. At an average age of 2.84 years, stunted females matured exactly 2 years earlier tnah their normal conspecific (4.84 years). Generally, females mature 1 or more years later than male P. fluviatilis or P. flavescens. This can be as early as during the second year of life for P. flavescens. More commonly, though, females are 3 or 4 years old at first maturity, and in some populations it may take on average 5 years to become mature 10.0 Jansen ,1996
Perca fluviatilis 2-3 2.5 Thorpe, 1977
Perca fluviatilis End of second year 2.0 Bruslé and Quignard, 2001
Perca fluviatilis 4 but sometimes 3 4.0 Treasurer, 1981
Perca fluviatilis 2-3 [Female specified] 2.5 Goubier, 1990
Perca fluviatilis 3-4 [Female specified but could be younger if conditions are good] 3.5 Dubois, 2001
Perca fluviatilis 3 [Female] 3.0 Fishbase, 2006
Perca fluviatilis 3 [36 months, age at maturation] 3.0 Vila-Gispert and Moreno-Amich, 2002
Perca fluviatilis 4-6 [Female] 5.0 Environment agency, ???
Perca fluviatilis In lake Geneva, 87% of perch female became mature during the second year 87.0 Gillet et al, 1995
Perca fluviatilis 3-4 [Female], but also 2-4 3.5 Korzelecka et al, 1998
Sander lucioperca 3-4 3.5 Hovarth et al, 1992
Sander lucioperca 1-2 for both sex in France, but in other countries 3-6 1.5 Goubier, XXX
Sander lucioperca 2 2.0 Raikova-Petrova and Zivkov, 1998
Sander lucioperca 4-5 in France but 1 in Tunisia 4.5 Bruslé and Quignard, 2001
Sander lucioperca 3-6 [Sex specified] 4.5 Lappaleinen et al, 2003
Sander lucioperca 3-4 [Sex not specified, rarely 2] 3.5 Olivier and Schlumberger, 2001
Sander lucioperca 3-4 [Both sex] 3.5 Deeler and Willemsen, 1964
Sander lucioperca 3+ [Female mature] 3.0 Poulet, 2004
Sander lucioperca 3.5 [42 months, age at maturation] 3.5 Vila-Gispert and Moreno-Amich, 2002
Sander lucioperca 3-4 [Not specified] 3.5 Environment agency, ???
Sander lucioperca Mature at the end of the first or second year 1.0 Zivkov and Petrova, 1993
Sander lucioperca Attain sexual maturity in the Baltic Sea between 2-5 years of age, the bulk of individuals at the age of 3-4 years. In general, male smature one year earlier and with a smaller body size than females. Due to lower growth rate, pikeperch mature generally later in the northern Baltic (4-5 years of age) 3.5 Lehtonen et al, 1996
Sander lucioperca In the moutain reservoir Batak Dam, pike perch begin to spawn at age 2, and 1 in the Ovcharitsa reservoir. In different reservoirs and dams, age at maturity for female range from 1-2 to 9-10, mostly 3-5 1.5 Raikova-Petrova and Zivkov, 1998
Sander vitreus In the wild, females mature at 3-6 years 4.5 Malison and Held, 1996b
Sander vitreus 3-6 4.5 Colby et al, 1979
Sander vitreus 3-6 4.5 Scott and Crossman, 1973
Sander vitreus 3-6 [Female] 4.5 Fishbase, 2006
Sander vitreus 3-6 [Females] 4.5 Anonymous, 2006 Chapter 3
Sander vitreus 5.5 [Both sex] 5.5 Olden et al, 2006
Sander vitreus Female sampled from the Swam Creek spawning population ranged in age from 5 to 22 years 5.0 Johnston, 1997
Sander vitreus 3 [Female] 3.0 Goubier, XXX
Sander vitreus Not females mature before age III and all matured by age V. Females from the eastern basin were about 50 and 92% mature at ages III and IV, respectively. Females from the western basin were about 85% mature at age III and almost 99% mature at age IV. Females from Lake Erie matured primarily at ages IV and possibly at V and few fish were mature at age II 3.0 Wolfert, 1969
Sander vitreus Females ranged in age from 5 to 18 years, and from 6 to 18 years in the Lake Manitoba and Lake Ontario trials. For both populations, this age range covered the majority of spawning females seen in recent spawning runs 5.0 Johnston et al, 2007
Sander vitreus Age at 50% maturity ranged from 3.89 to 4.88 years 50.0 Schueller et al, 2005
Coregonus lavaretus 2-6 [Sex not speicifed] 4.0 Skurdal et al, 1985
Coregonus lavaretus 3-4 [Female] 3.5 Fishbase, 2006
Coregonus lavaretus 4 [Female] 4.0 Bagenal, 1970
Coregonus lavaretus 3-4 [Sex not specified] 3.5 Maitland, 1977
Coregonus lavaretus 2-3 years [Not specified] 2.5 Mack and Billard, 1984
Coregonus lavaretus Fermales were mostly aged 2+; less numerous were age groups 3+ and 4+. The youngest and oldest females were aged 1+ and 10+ 2.0 Heese, 1990
Coregonus albula 1 1.0 Bruslé and Quignard, 2001
Coregonus albula 1-2 [Sex specified] 1.5 Demska-Zakes and Dlugosz, 1995
Coregonus albula 1-2 [For female, but the dominant age on spawing ground is 3] 1.5 Czerniejewski and Filipiak, 2002
Coregonus albula 2 [Mixed] 2.0 Fishbase, 2006
Coregonus albula 1-2 [Both sex] 1.5 Dlugosz and Worniallo, 1985
Coregonus albula 2-3 [not specified] 2.5 Maitland, 1977
Coregonus albula Age of the females examined ranged from 1 to 6 years 1.0 Wilkonska, 1992
Coregonus albula Age 2 and 3 constitued 83% in females [Range 2-6] 4.0 Wilkonska et al, 1993
Coregonus albula Spawners of both forms reached maturity at 2 [Both sex] 2.0 Anwand, 1998
Coregonus albula Age 1+ females form the major part of the spawning stock 1.0 Sarval and Helminen, 1995
Coregonus albula The spawning stock consisted mainly of age 1+ fishes, and thier numbers varied little during the study period 1.0 Sarvala et al, 1992
Coregonus albula Depending on environmental conditions in lakes, females of this species are able to breed, most often, in their second year of life, whereas the males- in third. A number of researchers stated that in some cold bodies of water of north-eastern Europe of vendace mature as late as in the third year of their lives and in the case of Siberian vendace- at the age of 4+. In polish lakes, because of the thermal conditions of waters, the vendace is ready for reproduction as early as the age of 1+. It has been confirmed in the present study, carried out in lakes of Western Pomerania. On the spawning ground, however, dominate 3-year-old fish of much higher fecundity than that of 1+ vendace. 10.0 Czeniejewski and Filipiak, 2002
Coregonus clupeaformis Reach at 2 [Not specified] 2.0 Anonymous, 2006 Chapter 3
Coregonus clupeaformis In labrador, lake whitefish usually attain sexual maturiy in 5-11 years, although dwarf populations may mature as early as 2 years of age [Sex not specified] 8.0 Bradbury et al, 1999
Coregonus clupeaformis Vary between 6 or 9 years for female 6.0 Mack and Billard, 1984
Hucho hucho 4-5 4.5 Bruslé and Quignard, 2001
Hucho hucho 3-5 4.0 Barton, 1996
Hucho hucho 4-5 [Sex specified] 4.5 Holcik, 1990
Hucho hucho 4 [Female] 4.0 Perrin, 2001
Hucho hucho 4-5 [Female] 4.5 Jatteau, 1991
Hucho hucho 4-5 [Female] 4.5 Witkowski, 1988
Hucho hucho The female reach sexual maturity at the age of 5 years, but also described at 3 or 4 5.0 Prawochensky and Kolder, 1968
Hucho hucho First spawning takes place when fish are 4 or 5 years old [Sex not specified] 4.0 Jungwirth, 1978
Hucho hucho Reach sexual maturity after 4-5 years [Sex not specified] 4.5 Jungwirth, 1979
Hucho hucho Danubian salmon in pond culture achieve sexual maturity in the 6th-8th year of life 6.0 Penaz and Prihoda, 1981
Oncorhynchus gorbuscha 2 2.0 Barton, 1996
Oncorhynchus gorbuscha Virtually all mature at 2 [rarely 1-3] 2.0 Beacham et al, 1988
Oncorhynchus keta 3-4 3.5 Barton, 1996
Oncorhynchus keta Most 3-4 [Both sex] 3.5 Scott and Crossman, 1973
Oncorhynchus keta 2-4 [Both sex] 3.0 Fishbase, 2006
Oncorhynchus keta Range from 2 to 6 yr, with 3 and 4 yr being the dominant ages of maturity [Both sex] 2.0 Beacham and Murray, 1987
Oncorhynchus kisutch 3-4 3.5 Barton, 1996
Oncorhynchus kisutch Usually mature at 3 3.0 MacQuarrie et al, 1978
Oncorhynchus mykiss 3-5 or 6-8 4.0 Barton, 1996
Oncorhynchus mykiss 3 3.0 Groot, 1996
Oncorhynchus mykiss 2 [Sex not specified] 2.0 Bruslé and Quignard, 2001
Oncorhynchus mykiss 3 [Female] 3.0 Fishbase, 2006
Oncorhynchus mykiss Usually 3-5, to as late as 6 years 4.0 Scott and Crossman, 1973
Oncorhynchus mykiss 2.5 [Both sex] 2.5 Olden et al, 2006
Oncorhynchus mykiss Females sampled were between 2-4 3.0 Kato and Kamler, 1983
Oncorhynchus nerka 4-5 4.5 Barton, 1996
Oncorhynchus nerka 4 [Both sex] 4.0 Olden et al, 2006
Oncorhynchus nerka Overall age of maturity in sockeye salmon ranges from 3 to 8 years, female may mature at any 14 different age compositions. Kokanee generally mature after either 2, 3 or 4 years 3.0 Gustafson et al, 1997
Oncorhynchus tshawytscha 4-5 4.5 Barton, 1996
Oncorhynchus tshawytscha 4-8 [Most female (93%) mature after spending four or five winter ar sea] 6.0 Beacham et al, 1989
Oncorhynchus tshawytscha 3-7 [Rarely at 2 or 3] 5.0 Hankin et al, 1993
Salmo salar 3-7 5.0 Barton, 1996
Salmo salar 2 and more 2.0 Jarrams, 1979
Salmo salar 3-4 [Not specified] 3.5 Kerr and Grant, 1999
Salmo trutta fario 4-5 4.5 Barton, 1996
Salmo trutta fario 3 3.0 Bruslé and Quignard, 2001
Salmo trutta fario 2-5 or 3-6 [Not well established] 3.5 Groot, 1996
Salmo trutta fario 2 [Female] 2.0 Ombredane et al, 2001
Salmo trutta fario 3-4 [Female] 3.5 Fishbase, 2006
Salmo trutta fario 3 [31-36 months, age at maturation] 33.5 Vila-Gispert and Moreno-Amich, 2002
Salmo trutta fario Average 3+ [Not specified] 3.0 Kerr and Grant, 1999
Salmo trutta fario 3.0 [Both sex] 3.0 Olden et al, 2006
Salmo trutta fario Females: Age I [16%], age II [77%], age 3 [88%] and age 4 [100%] 16.0 Taure, 1976
Salmo trutta fario Spawning males were significantly younger 2+ and 4+ years, than females 3+ to 5+ years. The oldest female was 8+ years 2.0 Rubin et al, 2005
Salmo trutta fario It matures at age 2 and 4 years and males usually mature one year earlier than females. 2.0 Randak et al, 2006
Salvelinus alpinus 7-12 9.5 Barton, 1996
Salvelinus alpinus 4-11 [Far east], 6-10 [Alaska], 10-18 [Nortwest territories], 11-25 [Arctic islands] 7.5 Groot, 1996
Salvelinus alpinus 3-4 3.5 Bruslé and Quignard, 2001
Salvelinus alpinus 5-10 [Female] 7.5 Fishbase, 2006
Salvelinus alpinus 7-8 [Female] 7.5 Pavlov et al, 1994
Salvelinus alpinus Usually mature at 4-5 years of age [Sex not specified] 4.5 Bradbury et al, 1999
Salvelinus alpinus Average age of sexually mature fish from the Fraser River, nothern Labrador was 6.9 for females 6.9 Beddow et al, 1998
Salvelinus alpinus Maturity occurs in the Sylvia Grinnel River at about 12 winters, and in George River at least as early as 7 winters, possibly younger 12.0 Grainger, 1953
Salvelinus alpinus 50% of the charr sexually mature at 4-5 year of age [Most males became sexually mature at a higher age than the females] 4.5 Jonsson and Hindar, 1982
Salvelinus alpinus No artic charr younger than 3+ were mature. females of the 'small charr' started to mature at age 4+. females of the 'large charr' started to mature sexually at age 9+ 3.0 Sparholt, 1985
Salvelinus alpinus The spawning run was composed of six age groups from 4+ to 9+. Quantitatively, age 6 and 7 fish predominate 6.0 Shershnev et al, 1986
Salvelinus fontinalis 2-3 2.5 Pennel and Barrington. 1996 (77)
Salvelinus fontinalis 2-3 [Sex not specified] 2.5 Bruslé and Quignard, 2001
Salvelinus fontinalis Mostly 3-4, few at 2 [Both sex] 3.5 Fraser, 1985
Salvelinus fontinalis Usually reach at 3, but could be 2 [Both sex] 3.0 Kerr and Grant, 1999
Salvelinus fontinalis 2.0 [Both sex] 2.0 Olden et al, 2006
Salvelinus fontinalis Sexual maturity of females usually arrives at the age of 3 or 4 years 3.0 Vladykov, 1956
Salvelinus fontinalis Sexual maturity was attained by the majority of the brrok trout at the end of their 3rd year of life, although many males and females were mature in 2 years 3.0 Wydoski and Cooper, 1966
Salvelinus fontinalis The youngest maturing fish were 3+ and 1+ for anadromous and fresshwater forms respectively 3.0 Castonguay et al, 1982
Salvelinus namaycush 6-7 6.5 Pennel and Barrington. 1996 (77)
Salvelinus namaycush 6-7 [Sex not specified] 6.5 Billard, 1997
Salvelinus namaycush 6-7 [Not specified] 6.5 Scott and Crossman, 1973
Salvelinus namaycush Mostly between 4 to 13 4.0 Kerr and Grant, 1999
Salvelinus namaycush 5.0 [Both sex] 5.0 Olden et al, 2006
Salvelinus namaycush In Labrador, lake trout usually attain sexual maturity in 6-11 years [Not specified] 8.5 Bradbury et al, 1999
Stenodus leucichthys 6-7 6.5 Belyaeva, 2005
Stenodus leucichthys 7-10 [Sex not specified] 8.5 Scott and Crossman, 1973
Stenodus leucichthys 10-12 [Female] 11.0 Fishbase, 2006
Stenodus leucichthys Mass maturation for females at 10-12 [But could be as early as 8] 11.0 Chereshnev et al, 2000
Stenodus leucichthys 8-10 [Not specified] 9.0 Maitland, 1977
Thymallus thymallus 2-3 even 4 in Nothern areas 2.5 Bruslé and Quignard, 2001
Thymallus thymallus 3-4 [Female] 3.5 Fishbase, 2006
Thymallus thymallus 2-3 [Most females were 3 years old] 2.5 Witkowski and Kowalewski, 1988
Thymallus thymallus Most 4-5, but in some areas at 3 [Female] 4.5 Northcote, 1995
Thymallus thymallus 3-4 [Not specified] 3.5 Environment agency, ???
Thymallus thymallus 3 [Female] 3.0 Maitland, 1977
Thymallus thymallus Females mature at 4-6 years 5.0 Zaytsev, 1987
Thymallus thymallus At age three, half of the grayling were mature and by age five years all males and females were mature 3.0 Kristiansen and Doving, 1996
Thymallus thymallus 3 years for females 3.0 Vivier, 1958
Thymallus thymallus Les géniteurs de troisième génération en pisciculture ont donné des produits sexuels à l'âge de 3 ans, certains étant matures à 2 ans, et ce malgré une croissance plus faible que dans les rivières d'Auvergne 3.0 Carmie et al, 1985
Thymallus arcticus Some at 4 for both sex but most at 6-9 7.5 Scott and Crossman, 1973
Thymallus arcticus Most at 4-5, few at 3 and rarely at 2 [Both sex] 4.5 Northcote, 1995
Thymallus arcticus A few reach sexual maturiy at age 3, about a quarter at age 4 and all by age 5 [Sex not specified] 3.0 Northcote, 1993
Thymallus arcticus 4.0 [Both sex] 4.0 Olden et al, 2006
Thymallus arcticus Fish in the 6- to 9- year group made up 93.5 percent of the run 6.0 Bishop, 1971
Cottus gobio 1-3 [Mixed] 2.0 Fishbase, 2006
Cottus gobio 2 [Both sex] 2.0 Marconato and Bisazza, 1988
Cottus gobio 2 [Not specified] 2.0 Environment agency, ???
Cottus gobio Among actively reproducing female, the smallest gravid female was 2 years and oldest 7 2.0 Abdoli et al, 2005
Ameiurus nebulosus 3 [Female] 3.0 Scott and Crossman, 1973
Ameiurus nebulosus 3.0 [Both sex] 3.0 Olden et al, 2006
Ictalurus punctatus 5-8 [Not specified] 6.5 Scott and Crossman, 1973
Ictalurus punctatus 5-8 [Not specified] 6.5 Anonymous, 2006 Chapter 3
Ictalurus punctatus 2.0 [Both sex] 2.0 Olden et al, 2006
Ictalurus punctatus Can mature as early as 2 years, but broodfish of at least 3 years are preferred 2.0 Legendre et al, 1997
Silurus glanis 4 [Mass maturation in 5-6 years] 5.5 Zholdasova and Guseva, 1987
Silurus glanis Mass maturation occurs in the 3-4 th year of life. However the maturation rate may be accelerated to 2 year [Sex not specified] 3.5 Orlova, 1987
Silurus glanis 4-5 4.5 Hovarth et al, 1992
Silurus glanis 4-5 4.5 Bruslé and Quignard, 2001
Silurus glanis 3-5 [Sex not specified] 4.0 Schlumberger and Proteau, 2001
Silurus glanis The smallest mature female was 4 years old [3-4 for females in other sutides] 3.5 Alp et al, 2004
Silurus glanis 3-4 3.5 Fishbase, 2006
Osmerus eperlanus Mostly 2-3, rarely 1 and up to 7-8 [Both sex] 2.5 Belyanina, 1969
Osmerus eperlanus Mostly 1, 2, 3 depedning on the location [Female] 1.0 Buckley, 1989
Osmerus eperlanus 2 [Sometimes 1, sex not specified] 2.0 Rochard, 2001
Osmerus eperlanus 1+ or 2+ [Both sex] 1.0 Quigley et al, 2004
Anguilla anguilla 8-15 11.5 Spillmann, 1961
Anguilla anguilla 5 [France], 9-13 [Germany], male 11.0 Fishbase, 2006
Anguilla anguilla 2.5-5 [Male] 3.75 Bruslé and Quignard, 2001
Anguilla anguilla Mean age about 5, range 2.5-9.1, means in various locations 5.8 Vollestad and Jonsson, 1986
Anguilla anguilla Males tend to mature at and age of 3-4 years 3.5 Vincent et al, 2005
Alosa alosa 4-7 5.5 Billard, 1997
Alosa alosa 3-5 4.0 Bruslé and Quignard, 2001
Alosa alosa 4 [mode, but between 3-6] 4.5 Mennesson-Boisneau et al, 2000
Alosa alosa 3-5 [Male] 4.0 Maitland and Lyle, 2005
Alosa alosa 3-4 [Male] 3.5 Bengen et al, 1991
Alosa alosa 2-5, male 3.5 Fishbase, 2006
Alosa alosa 3-4 [Both sex] 3.5 Maitland and Hatton-Ellis, 2000
Alosa alosa Adults range from 3 and 8 years 3.0 Aprahamian et al, 2001
Alosa alosa 4 [Male] 4.0 Bensettiti and Gaudillat, 2002
Alosa alosa Most of spawners of both sex were 5 years old, the spawning adutls of age 3 and 7 years were less than 0.2% for both sex 5.0 Lambert et al, 2001
Alosa alosa Sampled individuals in 2001 and 2002 were between 3 and 6 years for males 2001.0 Acolas et al, 2006
Alosa fallax 3-4 3.5 Billard, 1997
Alosa fallax 2-3 2.5 Bruslé and Quignard, 2001
Alosa fallax 3-4 [mode, but between 2-6] 3.5 Mennesson-Boisneau et al, 2000
Alosa fallax 3-5 [Male] 4.0 Maitland and Lyle, 2005
Alosa fallax Mean age of 2.95 for males 2.95 Doherty et al, 2004
Alosa fallax From 2 to 9 years, with males from 3-4 years 3.5 Aprahamian et al, 2001
Alosa fallax The males start to mature after three years 3.0 Maitland and Hatton-Ellis, 2000
Alosa fallax Between 3-4 and 4-5 depedning on populations [Sex not specified] 3.5 Bensettiti and Gaudillat, 2002
Alosa fallax The average age of female at sexual maturity range between 4.86 to 5.26 years, with a mean of 4.80 ± 0.021 years [Female mature at beween 3 and 8 years old with the majority at age 4 and 5 years at the northern limit of their distribution and at age 4 years for more southernly populations; in different sutdies mean age at maturity range from : 4/55 ± 0.9 [Wye, Whales]; 4.80 ± 0.02 [severn, England];, 4.38 ± 0.31 [Barrow, England]; 3.94 ± 0.13 [holland]; 4.27 ± 0.2 and 3.55 ± 0.2 [Loire, France], 3.93 ± 0.21 [Charente, France]; 4.27 ± 0.2 and 3.74 ± 0.14 [dordogne, France], 4.35 ± 0.21 [Adour, France], 4.66 ± 0.14 [sebou, France] 4.8 Aprahamian and Lester, 2001
Alosa sapidissima 3-5 4.0 Internet, 2005
Alosa sapidissima 4-5 [Not specified] 4.5 Scott and Crossman, 1973
Alosa sapidissima 2-4, male 3.0 Fishbase, 2006
Alosa sapidissima 3-4 [Males] 3.5 Mills, 2004
Alosa sapidissima 3-4 [Males] 3.5 Anonymous, 2006 Chapter 3
Alosa sapidissima Most american shad mature and return to spawn at betwenn 3 and 5 years of age [Not specified] 3.0 Burdick and Hightower, 2005
Alosa sapidissima 3.8-4.1 [Female] 3.95 Carscaden and Legget, 1975
Aphanius iberus 1 [Sex not precised] 1.0 Keith, 2001
Aphanius iberus Before 1 [Both sex] 1.0 Vargas and De Sostoa, 1997
Aphanius iberus From April to July, 1+ group specimens (7-12 months old) reproduced. Their offspring (0+ group; 3-4 months) reproduced) from July to September. 9.5 Fernandez-Delgado et al, 1988
Valencia hispanica 1 [Sex not specified] 1.0 Keith, 2001
Barbatula barbatula 1 1.0 Skryabin, 1993
Barbatula barbatula 1 1.0 Bruslé and Quignard, 2001
Barbatula barbatula 2-3 [Male] 2.5 Fishbase, 2006
Barbatula barbatula 2-3 [No specified] 2.5 Environment agency, ???
Cobitis taenia 3 3.0 Vaino and Saat, 2003
Cobitis taenia Most males and females become sexually mature in their second spring after hatching 2.0 Marconato and Rasotto, 1989
Cobitis taenia Maturation of males begins in the second year 2.0 Robotham, 1981
Cobitis paludica Beginning of 2 year [Both sex specified] 2.0 Oliva-Paterna et al, 2002
Cobitis paludica 1-2 [Most at 2 and 3, male specified] 1.5 Soriguer et al, 2000
Blicca bjoerkna 2-4 [Sex not specified] 3.0 Rinchard, 1996
Blicca bjoerkna 2-4 [Sex not specified] 3.0 Kestemont, 2001
Blicca bjoerkna 3 [Male in Finland] 3.0 Fishbase, 2006
Blicca bjoerkna 3-4 [Male] 3.5 Environment agency, ???
Blicca bjoerkna Females and some males reach maturity at an age of 4 years, but most males mature one year earlier 4.0 Hansen, 1980
Abramis brama 2-3 2.5 Sidorova, 2005
Abramis brama 2-3 2.5 Sokolova, 1990
Abramis brama 2-3 [Southern region] to 6-8 [Nothern region] 2.5 Backiel and Zawiska, 1968
Abramis brama Fish of 4+ to 15+ took part in spawning. The bulk of spawning males was 5+ to 8+ 4.0 Shestopalova, 1978
Abramis brama 4-6 [Both sex] 5.0 Molls, 1999
Abramis brama 4-6 [Not specified] 5.0 Environment agency, ???
Abramis brama Male attain maturity in their seventh year (VI+) 7.0 Cowx,1983
Abramis brama Males attain sexual maturity one to two years earlier than females 1.0 Brylinska and Boron, 2004
Abramis brama Male breams reach sexual maturity in Vortsjärv at the age of (6)7-9(10) years 8.0 Noges and Järvet, 2005
Abramis brama Other studies: 50% of the males matured having attained TL = 35.5 cm (SL= 27.7 cm) at the age of 7 years. […] Bream inhabiting the Rybinsk reservoir on the Volga to be sexually mature when older than 7 years, when 9.3% of the individuals were mature, at the average length of 27.4 cm. At the age of 9 years, almost half (48.1%) of all the individuals were mature, at the average length of 32.0 cm. All the bream (100%) were mature as last as in their 13th year of life, having attained a mean length of 38.4 cm 50.0 Neja and Kompowski, 2001
Alburnoides bipunctatus 2 2.0 Yildirim et al, 1999
Alburnoides bipunctatus 1-2 [Sex not precised] 1.5 Coad, 2005
Alburnus alburnus 2-3 [Sex not precised] 2.5 Rinchard, 1996
Alburnus alburnus 1-4 [Sex not specified] 2.5 Carrell and Olivier, 2001
Alburnus alburnus 2+ [Male] 2.0 Environment agency, ???
Alburnus alburnus It matures in 2 or 3 years of age [Not specified] 2.0 Winnicki and Korzelecka, 1997
Aristichthys nobilis 4-6 5.0 Horvath et al, 1992
Aristichthys nobilis 5-7 make up most of the run, about 90 % [Smallest male of 5] 6.0 Abdusamadov, 1986
Aristichthys nobilis 6-8 in temperate conditions [Both sex, but usually male mature earlier] 7.0 Kolar et al, 2005
Aristichthys nobilis Range from 2-3 [South China] to 5-6 [Northeast China] to 9 [Moscow] 2.5 Jennigs, 1988
Aristichthys nobilis Reach sexual maturity at ages 3 through 9 depending on the environmental conditions [Both sex] 3.0 Schrank, 1999
Aspius aspius 4 4.0 Shikhshabekov, 1979
Aspius aspius 3-4 3.5 Bruslé and Quignard, 2001
Aspius aspius 4-5 [Male], only only one at 3 4.5 Kompowski et Neja, 2004
Barbus barbus 4-5 4.5 Bruslé and Quignard, 2001
Barbus barbus 3-4 3.5 Philippart, 1987
Barbus barbus 3-4 [Male] 3.5 Fishbase, 2006
Barbus barbus 3-4 3.5 Environment agency, ???
Barbus barbus 3-4 [Male] 3.5 Poncin, 1984
Barbus barbus 6% of males are mature in their second year, 92% in their third year and 100% in their > fourth 6.0 Lobon-Cervia and Fernandez-Delgado, 1984
Carassius auratus 2 2.0 Spillmann, 1961
Carassius auratus 2 2.0 Internet, 2005
Carassius auratus 1-2 [sex not specified] 1.5 Scholfield, 2005
Carassius auratus 3.5 [Both sex] 3.5 Olden et al, 2006
Carassius carassius 3-4 [Not specified] 3.5 Environment agency, ???
Carassius carassius 2-5 [Not specified] 3.5 Scholfield, 2005
Chondrostoma nasus 3-6 4.5 Bruslé and Quignard, 2001
Chondrostoma nasus 4-7 [Sex not specified] 5.5 Nelva, 2001
Chondrostoma toxostoma 3-4 [Sex not specified] 3.5 Gozlan and Chappaz, 2001
Ctenopharyngodon idella 4-6 5.0 Horvath et al, 1992
Ctenopharyngodon idella 3-4 3.5 Bruslé and Quignard, 2001
Ctenopharyngodon idella 5 [Sex not specifiec] 5.0 Le Houarn, 2001
Ctenopharyngodon idella 4.0 4.0 Abdusamadov, 1986
Ctenopharyngodon idella 1-2 [Malaysia] to 6.0-10.0 [Russian Fed], male specified 1.5 Fishbase, 2006
Ctenopharyngodon idella 2 to 4, up to 6-10 in their natural range, and 4-5 in the United States, and 1-8 in the introduced countries [Sex not specifed] 8.0 Cudmore and Mandrak, 2004
Ctenopharyngodon idella 2-5 years in subtropical/tropical areas and 4-7 years in temperate regions [Sex not specified] 3.5 Scholfield, 2005
Ctenopharyngodon idella 4.5 [Both sex] 4.5 Olden et al, 2006
Ctenopharyngodon idella Males mature an average of one year earlier 1.0 Shireman and Smith, 1983
Cyprinus carpio 2-3 2.5 Horvath et al, 1992
Cyprinus carpio 2-3 2.5 Billard, ???
Cyprinus carpio 2 2.0 Bruslé and Quignard, 2001
Cyprinus carpio 2 [Male] 2.0 Lafaille and Crivelli, 2001
Cyprinus carpio 4.5 [Both sex] 4.5 Olden et al, 2006
Cyprinus carpio The common carp becomes sexualy mature in the Romanian Danube River at the age of 3 years for male 3.0 Ciolac, 2004
Cyprinus carpio In temperate climates, for males, spawning occurs during the second or third year of life 2.0 Dubost et al, 1997
Cyprinus carpio In Victoria, males and females mature at 1 and 2 years of age. On average males mature one year earlier than females 1.0 Smith, 2004
Gobio gobio 2-3 [Both sex] 2.5 Kennedy and Fitzmaurice, 1972
Gobio gobio 2 2.0 Bruslé and Quignard, 2001
Gobio gobio 2 [Sometimes 1, rarely 3-4, Box sex] 3.5 Rosechhi and Kestemont, 2001
Gobio gobio 2-3 [male] 2.5 Fishbase, 2006
Gobio gobio 1 [Bot sex] 1.0 Rosecchi et al, 2001
Gobio gobio 3-4 [Males] 3.5 Environment agency, ???
Gobio gobio 2-3 [Not specified] 2.5 Environment agency, ???
Gobio gobio Nearly all fish were mature at the end of their third year, and approximatively 64% of all males after two years 3.0 Mann, 1980
Hypophthalmichthys molitrix 4-6 5.0 Horvath et al, 1992
Hypophthalmichthys molitrix 4, most 5-7 6.0 Abdusamadov, 1986
Hypophthalmichthys molitrix 3-6 [Unsexed, China] 4.5 Fishbase, 2006
Hypophthalmichthys molitrix 3-4 [Male usually mature one year earlier than female] 3.5 Kolar et al, 2005
Hypophthalmichthys molitrix The broodstock analyzed is 5th - 6th generation reproduced artificially 5.0 Verigin et al, 1990
Leucaspius delineatus 1 [Male] 1.0 Le Louarn, 2001
Leucaspius delineatus Sexual maturity is attained at the age of two years (both males and females) 2.0 Bonislawska et al, 1999
Leucaspius delineatus 1 [Sex not specified] 1.0 Agence de l'eau,
Leuciscus cephalus 2 but sometimes 4-7 5.5 Bruslé and Quignard, 2001
Leuciscus cephalus 2 2.0 Unlu and Balci, 1993
Leuciscus cephalus 2 [Male] 2.0 Changeux and Le Louarn, 2001
Leuciscus cephalus 3-5 [Male] 4.0 Fishbase, 2006
Leuciscus cephalus 3 [Male] 3.0 Kalkan et al, 2005
Leuciscus cephalus Females and males first attained sexual maturity in their second year 1.0 Sasi, 2003
Leuciscus cephalus 2-3 [Male] 2.5 Poncin et al, 1987
Leuciscus cephalus The majority of males are mature at age V though some are ripe as early as age III 5.0 Mann, 1976
Leuciscus cephalus Males reached maturity in their second or third year of life 2.0 Ünver, 1998
Leuciscus cephalus In Poland, chub usually reach maturity at the age of 3-4 years. Males maturing at the age of 4 years in the river Stobnica. 28% of chub reached maturity at the age 3+, and 60% at the age 4+. In other countries 3-4 year period of maturation was reported. Typically males mature 1-2 years earlier than females. 3.5 Zelepien, 1997
Leuciscus cephalus Males matured sexually during their second-fourth year of life. 47.07% of males were mature in their second year, 85.71% in their third year, 96.2% in their fourth year and 100% in their fifth year and after 3.0 Erdogan et al, 2002
Leuciscus idus 2-5 [Sex no specified] 3.5 Kestemont, 2001
Leuciscus idus 5 [Male] 5.0 Fishbase, 2006
Leuciscus idus As a rule, male mature one year earlier than females. In southern and central Europe, first spawning-ide are age 3-5 years, sometimes they are 2 years old. In eastern Europe, reproductive period begins at the age of 4 and 5 years. More precisely 6 years [Kävlingean], 4 years [Dniepr], (3) 4 [Dunaj] 4.0 Witkowski et al, 1997
Leuciscus leuciscus 2 but 3-4 [Sex not precised] 3.5 Bruslé and Quignard, 2001
Leuciscus leuciscus 2-3 [Male] 2.5 Fishbase, 2006
Leuciscus leuciscus 3-4 [Not specified] 3.5 Environment agency, ???
Leuciscus leuciscus 3-5 |Not specified for vairous populations] 4.0 Lobon-cervia et al, 1996
Leuciscus leuciscus 3-4, rarely 2 [Male] 3.5 Mann, 1974
Leuciscus leuciscus Both sex reach sexual maturity after four years growth, although some fast-growing individuals may do so after three years 4.0 Mann and Mills, 1985
Mylopharyngodon piceus 3 3.0 Fishbase, 2006
Phoxinus phoxinus 2 2.0 Spillmann, 1961
Phoxinus phoxinus 2-3 [Sex not precised] 2.5 Bruslé and Quignard, 2001
Phoxinus phoxinus 1-2 [Male] 1.5 Kestemont, 2001
Phoxinus phoxinus 1-2 [Male and Female] 1.5 Mills, 1987
Phoxinus phoxinus 2 and in very favourable conditions 1 [Both sex] 2.0 Papadopol and Weinberger, 1975
Phoxinus phoxinus 3 but most 4-5 [Both sex in subalpine lake] 4.5 Museth et al, 2002
Phoxinus phoxinus 2-3 [Not specified] 2.5 Environment agency, ???
Phoxinus phoxinus Most minnows reach sexual maturity in 3 years of age 3.0 Soin et al, 1982
Phoxinus phoxinus The youngest males caught were 5-year-olds (52.0-65.0 mm) 5 fish (mean length 55.6 mm) of those were immature and 21 (mean length 60.4 mm) were mature. All 39 6-year-old and three 7-year-old males were mature 58.5 Mills, 1988
Phoxinus phoxinus Males are generally mature at 1-2 years 1.5 Kestemont and Mélard, 1994
Pimephales promelas Most at 1, also at 2 1.0 DeWitt, 1993
Pimephales promelas As low as 2-3 months for male and female 2.5 Markus, 1934
Pseudorasbora parva 1-2 [Sex not specified] 1.5 Rossechi et al, 2001
Pseudorasbora parva 1 [Not specified] 1.0 Fishbase, 2006
Pseudorasbora parva 1 [Both sex] 1.0 Rosecchi et al, 2001
Pseudorasbora parva The fish is sexually dimorphic with males larger than females and reaches maturity at the age of one to two years 1.0 Katano and Maekawa, 1997
Rhodeus sericeus 1 [Both sex] 1.0 Smith et al, 2004
Rhodeus sericeus 1 [Sex not precised] 1.0 Oliver and Carrel, 2001
Rhodeus sericeus 2-3 [Unsexed] 2.5 Fishbase, 2006
Rhodeus sericeus 1 [Both sex] 1.0 Rosecchi et al, 2001
Rhodeus sericeus 1 [Both sex for amarus] 1.0 Bensettiti and Gaudillat, 2002
Rutilus rutilus 2 2.0 Rinchard, 1996
Rutilus rutilus 3-4 [Sex specified] 3.5 Mann, 1973
Rutilus rutilus 3 minimal age (with n=4543) 3.0 Spivak et al, 1979
Rutilus rutilus 2-3 [Male] 2.5 Le Houarn et al, 2001
Rutilus rutilus First male spawned at age 2, all males older than 3 are mature 2.0 Vollestad et al, 1987
Rutilus rutilus 1+ 1.0 Papageorgiou, 1979
Rutilus rutilus 2-4 [Males] 3.0 Environment agency, ???
Rutilus rutilus The sizes at 50% maturity correponds to 3 years of age for both sexes of roach [Review from other populations: 3, 1, 2-3, 3-4, 3, 3, 3, 3, 3, 3, 3, 3 , 2, 3, 2 and 4]] 2.5 Tarkan et al, 2006
Rutilus rutilus A proportion of the males matured at age 2+ 2.0 Mackay and Mann, 1969
Rutilus rutilus Males roaches reach their sexual maturity at 2(3)-4(5) years age 2.0 Noges and Järvet, 2005
Rutilus rutilus 2-3 years for females 2.5 Paull et al, 2008
Scardinius erythrophthalmus 3-4 3.5 Shikhshabekov, 1979
Scardinius erythrophthalmus 2-3 [Age not precised] 2.5 Lafaille et al, 2001
Scardinius erythrophthalmus 5 [Unsexed] 5.0 Fishbase, 2006
Scardinius erythrophthalmus 3-4 [Not specified] 3.5 Environment agency, ???
Scardinius erythrophthalmus The sizes at 50% maturity correponds to 1 year of age for both sexes of roach [review from other populations: 1, 1-2, 2, 2, 3-4, 1 and 3] 1.5 Tarkan et al, 2006
Scardinius erythrophthalmus Male generally mature at age 1 1.0 Hicks, ???
Tinca tinca 2-3 2.5 Horvath et al, 1992
Tinca tinca From 3 [Sex not specified] 3.0 Feunteun et al, 2001
Tinca tinca Mostly at 4, few at 2-3 2.5 Yilmaz, 2002
Tinca tinca 3-7 [Minimal age of male for optimal reproduction] 5.0 Linhart and Billard, 1995
Tinca tinca 3-5 Not specified] 4.0 Environment agency, ???
Tinca tinca Male attainred sexual maturity at 3 3.0 Alas and Solak, 2004
Tinca tinca Attain sexual maturity at 3-4 years of age Sex not specified] 3.5 Morawska, 1984
Tinca tinca In climatic conditions of Czech Republic tench mature in the second-fourth year of life. Males usually mature in the second year (third) year of life. Females mature a year later than males. Tench reared in fish ponds mature earlier than tench from rivers or dam reservoirs situated at the same altitude. 3.0 Kubu and Kouril, 1985
Vimba vimba 3 3.0 Shikhshabekov, 1979
Vimba vimba 2 2.0 Bruslé and Quignard, 2001
Vimba vimba 2 2.0 Coad, 2005
Vimba vimba 3-4 [Sex not specified] 3.5 Keith and Allardi, 2001
Vimba vimba 3 [Unsexed] 3.0 Fishbase, 2006
Vimba vimba Vimba mature in the 2nd and 3rd year of life. The caspian vimba matures at the age of 3. Fish of age 2-5 participate in spawning, and 4-year-old fish are predominant in the spawning population. 3.5 Kuliev, 1988
Vimba vimba Males become mature at the age 5. A common age of spawning vimba is 6-7 years 6.5 Kesminas et al, 1999
Vimba vimba The youngest mature males in the spawning shoal in 1993 were four years old - 14 males and only one female (year class 1990). In 1995 seven mature males aged 3 years (year class 1992) and four mature females 4 years old (year class 1992) were found. Males generally matured one year-earlier than females. Analysis of the age structure of the spawning shoals sampled on 3 June, 1993 and 2 June, 1995 showed that they comprised mainly 4 to 6 year old fish, with a predominance in two year classes: four -and five -year old males comprising 91.97% of 83 individuals in 1993 and 82.30% of 96 individuals in 1995, whereas females consisted mainly of fishes in the age of five to six years in 1993 (=74.19% from 31 ind.) and four to six years in 1995 (=82.30% of 39 ind.) 1993.0 Lusk et al, 2005
Vimba vimba The fourth age group almost exclusively comprised males, females being rarely encoutered. This indicates that males reach the maturity state in their fourth year of life, i.e., a year earlizer than females 4.0 Trzebiatowski and Narozanski, 1973
Gambusia affinis 0.4 [Both sex] 0.4 Bruslé and Quignard, 2001
Gambusia affinis 0.1 [Both sex] 0.1 Olden et al, 2006
Gambusia affinis Age at sexual maturity averaged 43.3 and 62.1 days for individually and group-reared males, respectively 43.3 Campton and Gall, 1988
Esox masquinongy 4-6 5.0 Crossman, 1990
Esox masquinongy 3-5 [No apparent difference in age at attainment of maturity] 4.0 Scott and Crossman, 1973
Esox masquinongy Muskellunge are sexually mature between 3 and 5 years of age, and males mature before females 3.0 Clemmons and Newman, 1997
Esox niger 3-4 [Both sex] 3.5 Scott and Crossman, 1973
Esox niger 2-4 [Male] 3.0 Anonymous, 2006
Esox lucius 2-3 [Sex specified] 2.5 Hovarth et al, 1992
Esox lucius 2-4 [Male, but sometimes 1] 3.0 Billard, 1996
Esox lucius 1-2 1.5 Bruslé and Quignard, 2001
Esox lucius 2 [Sex specified, but rarely 1] 2.0 Frost and Kipling, 1967
Esox lucius 2-3 [Both sex, but sometimes 1] 2.5 Souchon, 1983
Esox lucius 2 [But sometimes 1] 2.0 Le Louarn and Feunteun, 2001
Esox lucius 2-3 in south and 5 in north [Male] 2.5 Scott and Crossman, 1973
Esox lucius 2-3 [Both males and females] 2.5 Environment agency, ???
Esox lucius 2.0 [Both sex] 2.0 Olden et al, 2006
Esox lucius Male first spawned at 2 years in both lakes [Other studies: mostly 2, once 1 or 3] 1.0 Treasurer, 1990
Lota lota 3+ 3.0 Van Houdt, 2003
Lota lota 1-2 1.5 Bruslé and Quignard, 2001
Lota lota Usually in the 3-4 [Both sex] 3.5 Scott and Crossman, 1973
Lota lota 3.0 3.0 Fishbase, 2006
Lota lota 5 [Lowest age] 5.0 Vedeneev et al, 2003
Lota lota In Canada, burbot generally reach sexual maturity between 2-8 years of age [sex not specified] 5.0 Bradbury et al, 1999
Lota lota 3-4 [Sex not specified] 3.5 Anonymous, 2003
Lota lota Some burbot are probably sexually mature when 2 years old, and immaturity seems to be associated more with size than with age 2.0 Hewson, 1955
Lota lota Burbot attain sexual maturity in the Vilyuy basin in the 7th year, mostly 8th of life. Most probably, the males mature one year earlier 7.0 Kirillov, 1989
Lota lota First spawning males are 3 years old 3.0 Kujawa et al, 2002
Lota lota Burbot matured in Lake Cle Elum at 2-4 years (28-43 cm TL). In Palmer Lake, all mature males were six years or older and mature females seven years or older (54 and 64 cm TL, respectively). Most burbot matured at 3-4 years of age in three Wyoming lakes, and two years in Lake Winninpeg 3.0 Bonar et al, 2000
Gasterosteus aculeatus 1-2 [Both sex] 1.5 Fishbase, 2006
Gasterosteus aculeatus 1 [Both sex] 1.0 Scott and Crossman, 1973
Gasterosteus aculeatus 2 [Not specified] 2.0 Environment agency, ???
Pungitius pungitius 1 [Sex not precised] 1.0 Bruslé and Quignard, 2001
Pungitius pungitius 1 [Sex not precised] 1.0 Lafaille and Feunteun, 2001
Pungitius pungitius 1-2 [Unsexed] 1.5 Fishbase, 2006
Pungitius pungitius 1 [Not specified] 1.0 Environment agency, ???
Pungitius pungitius Mean or most common values and ranges in parenthses => 2+ in Alaskan Lake; 1+ (2+) in Québec river, 2+ in Québec Lake; 2+ (1-3+) in Lake Superior USA; 1+ (2-3) in English stream 2.0 Heins et al, 2003
Ambloplites rupestris 2-3 [Sex not specified] 2.5 Carrel et al, 2001
Ambloplites rupestris 3.0 [Sex not specified] 3.0 Olden et al, 2006
Lepomis gibbosus 2-3 [Sex not specified] 2.5 Internet, 2005
Lepomis gibbosus 3 [Male specified but possible at 1 year] 3.0 Carrel et al, 2001
Lepomis gibbosus 2 [Not specified] 2.0 Scott and Crossman, 1973
Lepomis gibbosus 2 [Mixed] 2.0 Fishbase, 2006
Lepomis gibbosus From 1.4 to 3.9 in Europe, 3-5 in their study [Both sex] 4.0 Copp et al, 2002
Lepomis gibbosus 2.5 [Both sex] 2.5 Olden et al, 2006
Lepomis gibbosus Ages of first maturity was 5.76 for males 1.0 Deacon and Keast, 1987
Micropterus dolomieui 2-4 [Sex not specified] 3.0 Internet, 2005
Micropterus dolomieui 3 [Male] 3.0 Fishbase, 2006
Micropterus dolomieui 3-5 [Male] 4.0 Scott and Crossman, 1973
Micropterus dolomieui 3-4 years [Sex not specified] 3.5 Kerr and Grant, 1999
Micropterus dolomieui 3.5 [Both sex] 3.5 Olden et al, 2006
Micropterus dolomieui Bass of both sexes began to mature at age IV (18.7-26.0 cm) with 33% of the males and 9.1% of the fremales mature. Of fish of age V, 88% of males and 82% of females were mature. All fish of age VI (26.4-36.6 cm) examined were mature 22.35 Turner and MacCrimmon, 1970
Micropterus dolomieui Individuals reach maturity at 3-4 years in North temperate populations 3.5 Gillooly and Baylis, 1999
Micropterus salmoides 3-5 (less than one year in tropical or subtropical regions) 4.0 Heidinger, 1976
Micropterus salmoides At least two years 2.0 Newburg, 1975
Micropterus salmoides 2-5 [Sex not specified] 3.5 Bruslé and Quignard, 2001
Micropterus salmoides 2-3 [Sex not specified] 2.5 Carrel and Schlumberger, 2001
Micropterus salmoides 4-5 [Male] 4.5 Scott and Crossman, 1973
Micropterus salmoides 2.5 [Both sex] 2.5 Olden et al, 2006
Dicentrarchus labrax 2 2.0 Papadaki et al, 2005
Dicentrarchus labrax 2-3 [Female in Meditterranean Sea] and 4-7 [Off Irlande] 2.5 Zohar et al, 1984
Dicentrarchus labrax 3 [Unsexed] 3.0 Fishbase, 2006
Dicentrarchus labrax 4-7 [Great Brittany], 4 [Arcachon, France], 2 [Sète, France] and 2-3 [Tunisia] 5.5 Barnabé, 1980
Dicentrarchus labrax Bass in British waters mature for the first time at 4-7 years (about 35 cm total length), with males generally maturing before females 5.5 Mayer et al, 1988
Morone americana All males 2+ are mature, some at I 2.0 Sheri and Power, 1968
Morone americana Most males mature at 2 2.0 Stanley and Danie, 1983
Morone americana 4 in males 4.0 Everly and Boreman, 1999
Morone americana Males mature at an earlier age than females; all those examined in age group and older were sexually mature. None of age group I, however, were sexually mature 1.0 Mansuetti, 1961
Morone chrysops 3 [But sometimes at 1-2] 1.5 Internet, 2005
Morone chrysops Mature at age 3, some at 2 3.0 Ruelle, 1977
Morone chrysops Usually 2 [Male] 2.0 Kohler, 1997
Morone chrysops 2.0 [Both sex] 2.0 Olden et al, 2006
Morone chrysops At 1 year of age, a few males were mature, and by 2 years all males were mature, in reared conditions 1.0 Smith et al, 1996
Morone saxatilis 5 [Male] 5.0 Fishbase, 2006
Morone saxatilis 3 [Male] 3.0 Sullivan et al, 1997
Morone saxatilis 5.5 [Both sex] 5.5 Olden et al, 2006
Morone saxatilis Spawn for the first time at 3 to 6 years of age [Not specified] 1.0 Burdick and Hightower, 2005
Morone saxatilis In 1976: male were mature at age III (48%), age IV (67%), age V (87%), age VI (78%) and age VII (100%) 1976.0 McLaren et al, 1981
Morone saxatilis In the mid-Atlantic region, males reach sexual maturity during their second and third year 2.0 Holland et al, 2000
Gymnocephalus cernua 2-3 but sometimes 1 [Sex not specified] 2.5 Ogle, 1998
Gymnocephalus cernua 2 [ sex not specified] 2.0 Bruslé and Quignard, 2001
Gymnocephalus cernua 2 [Part of the population at 1] 2.0 Kovac, 1998
Gymnocephalus cernua 1-3 [Sex not specified] 2.0 Crivelli and Rosecchi, 2001
Gymnocephalus cernua 1 [Male] 1.0 Fishbase, 2006
Gymnocephalus cernua 2 [Not specified] 2.0 Environment agency, ???
Perca flavescens 1 [Rare but most at 3-4] 3.5 Heidinger and Kayes, 1986
Perca flavescens 2 [Sex specified, rarely at 1] 2.0 Dabrowski et al, 1996
Perca flavescens 3 [Sex specified] 3.0 Scott and Crossman, 1973
Perca flavescens Males reach sexual maturity during their second summer 2.0 Kerr and Grant, 1999
Perca flavescens 1 [Males] 1.0 Anonymous, 2006 Chapter 3
Perca flavescens 2.0 [Both sex] 2.0 Olden et al, 2006
Perca flavescens Except fot two age II females taken in the summern all fish older than age I were mature 2.0 Brazo et al, 1975
Perca flavescens Out of the 483 stunded males analyzed for maturity status, almost all fish had reached maturity by the time they were two years old, and one male reached maturity after the firstgrowing season. The average age at maturity (1.61 years) of stunded males was nerly 1 year less than that of normal males (2.52 years). Males of P. flavescens and P. fluviatilis typically spawn at age 2, although in some populationsof P. fluviatilis almostall fish mature furing their first year of life, and in one reported case most male P. flavescens mature at age 1 483.0 Jansen ,1996
Perca fluviatilis 1-2 1.5 Thorpe, 1977
Perca fluviatilis End of first year 1.0 Bruslé and Quignard, 2001
Perca fluviatilis 2 2.0 Treasurer, 1981
Perca fluviatilis 1-2 [Male specified] 1.5 Goubier, 1990
Perca fluviatilis 2 [Male specified but could be younger if conditions are good] 2.0 Dubois, 2001
Perca fluviatilis 2 [Male] 2.0 Fishbase, 2006
Perca fluviatilis 2-4 [Male] 3.0 Environment agency, ???
Perca fluviatilis Sexual maturity is attained by perch males at the age of 2-3 years, but also 1-3 2.5 Korzelecka et al, 1998
Perca fluviatilis All males mature at an age of 2 years, and 54.5 were mature at 1 year old 2.0 Heibo and Vollestad, 2002
Sander lucioperca 2-3 2.5 Horvath et al, 1992
Sander lucioperca 2 [Sex specified] 2.0 Raikova-Petrova and Zivkov, 1998
Sander lucioperca 2-3 2.5 Bruslé and Quignard, 2001
Sander lucioperca 2-4 3.0 Lappaleinen et al, 2003
Sander lucioperca 3-4 [Sex not specified, rarely 2] 3.5 Olivier and Schlumberger, 2001
Sander lucioperca 3-4 [Both sex] 3.5 Deeler and Willemsen, 1964
Sander lucioperca 1 [50% of mature males] 1.0 Poulet, 2004
Sander lucioperca 3-4 [Not specified] 3.5 Environment agency, ???
Sander lucioperca 1-2 for both sex in France, but in other countries 3-6 1.5 Goubier, XXX
Sander lucioperca Mature at the end of the first or second year 1.0 Zivkov and Petrova, 1993
Sander lucioperca Attain sexual maturity in the Baltic Sea between 2-5 years of age, the bulk of individuals at the age of 3-4 years. In general, male smature one year earlier and with a smaller body size than females. Due to lower growth rate, pikeperch mature generally later in the northern Baltic (4-5 years of age) 3.5 Lehtonen et al, 1996
Sander lucioperca In the moutain reservoir Batak Dam, pike perch begin to spawn at age 2, and 1 in the Ovcharitsa reservoir. In different reservoirs and dams, age at maturity for male range from 1-2 to 8-9, mostly 2-4 1.5 Raikova-Petrova and Zivkov, 1998
Sander vitreus 2-4 [Sex specified] 3.0 Malison and Held, 1996a
Sander vitreus 2-4 [Sex specified] 3.0 Colby et al, 1979
Sander vitreus 2-4 [Sex specified] 3.0 Scott and Crossman, 1973
Sander vitreus 2-4 [Male] 3.0 Fishbase, 2006
Sander vitreus 2-4 [Males] 3.0 Anonymous, 2006 Chapter 3
Sander vitreus 5.5 [Both sex] 5.5 Olden et al, 2006
Sander vitreus 2 [Male] 2.0 Goubier, XXX
Sander vitreus All age-II males were mature in the eastern basin but only 96% of those in the western basin were mature 96.0 Wolfert, 1969
Coregonus lavaretus 2-6 [Sex not specified] 4.0 Skurdal et al, 1985
Coregonus lavaretus 3 [Male] 3.0 Fishbase, 2006
Coregonus lavaretus 3 [Male] 3.0 Bagenal, 1970
Coregonus lavaretus 3-4 [sex not specified] 3.5 Maitland, 1977
Coregonus lavaretus 2-3 [Not specified] 2.5 Mack and Billard, 1984
Coregonus albula 3 [Male] 3.0 Czerniejewski and Filipiak, 2002
Coregonus albula 2 [Mixed] 2.0 Fishbase, 2006
Coregonus albula 1-2 [Both sex] 1.5 Dlugosz and Worniallo, 1985
Coregonus albula Age 2 and 3 constitued 84% in females [Range 2-6] 4.0 Wilkonska et al, 1993
Coregonus albula Spawners of both forms reached maturity at 2 [Both sex] 2.0 Anwand, 1998
Coregonus albula Depending on environmental conditions in lakes, females of this species are able to breed, most often, in their second year of life, whereas the males- in third. A number of researchers stated that in some cold bodies of water of north-eastern Europe of vendace mature as late as in the third year of their lives and in the case of Siberian vendace- at the age of 4+. In polish lakes, because of the thermal conditions of waters, the vendace is ready for reproduction as early as the age of 1+. It has been confirmed in the present study, carried out in lakes of Western Pomerania. On the spawning ground, however, dominate 3-year-old fish of much higher fecundity than that of 1+ vendace. 10.0 Czeniejewski and Filipiak, 2002
Coregonus clupeaformis Reach at 2 [Not specified] 2.0 Anonymous, 2006 Chapter 3
Coregonus clupeaformis Males mature at an ealier age than females and die ealier 0.0 Kerr and Grant, 1999
Coregonus clupeaformis In labrador, lake whitefish usually attain sexual maturiy in 5-11 years, although dwarf populations may mature as early as 2 years of age [Sex not specified] 8.0 Bradbury et al, 1999
Coregonus clupeaformis Vary between 5 to 8 years [male] 5.0 Mack and Billard, 1984
Hucho hucho 3-4 3.5 Bruslé and Quignard, 2001
Hucho hucho 3-4 [Sex specified] 3.5 Holcik, 1990
Hucho hucho 3 [Male] 3.0 Perrin, 2001
Hucho hucho 3-4 [Male] 3.5 Jatteau, 1991
Hucho hucho 3-4 [Male, the males mature a year before than females] 3.5 Witkowski, 1988
Oncorhynchus gorbuscha Virtually all mature at 2 [rarely 1-3] 2.0 Beacham et al, 1988
Oncorhynchus gorbuscha Generally marure at 2-3 years of age [Sex not specified] 2.5 Bradbury et al, 1999
Oncorhynchus keta Most 3-4 [Both sex] 3.5 Scott and Crossman, 1973
Oncorhynchus keta 2-4 [Both sex] 3.0 Fishbase, 2006
Oncorhynchus keta Range from 2 to 6 yr, with 3 and 4 yr being the dominant ages of maturity [Both sex] 2.0 Beacham and Murray, 1987
Oncorhynchus kisutch 3-4 3.5 Barton, 1996
Oncorhynchus kisutch Usually mature at 3 but sometimes at 2 3.0 MacQuarrie et al, 1978
Oncorhynchus mykiss 2 [Sex not specified] 2.0 Bruslé and Quignard, 2001
Oncorhynchus mykiss 2-3 [Male] 2.5 Fishbase, 2006
Oncorhynchus mykiss As early as 1 year by males (rarely), the usual age would be 3-5, with males often maturing a year younger than females 4.0 Scott and Crossman, 1973
Oncorhynchus mykiss 2.5 [Both sex] 2.5 Olden et al, 2006
Oncorhynchus nerka 4.0 [Both sex] 4.0 Olden et al, 2006
Oncorhynchus nerka Overall age of maturity in sockeye salmon ranges from 3 to 8 years. Males are capable of maturing at any of 22 different combinations of freshwater and ocean ages. Kokanee generally mature after either 2, 3 or 4 years 3.0 Gustafson et al, 1997
Oncorhynchus tshawytscha 3-4 [Most males (81%) mature after spending three or four winters in the ocean] 3.5 Beacham et al, 1989
Oncorhynchus tshawytscha May mature as early as 2 as "Jacks", through at least 7 2.0 Hankin et al, 1993
Oncorhynchus tshawytscha Usually in 2 and 3 [Male specified] 2.0 Kerr and Grant, 1999
Salmo salar 3-7 [Male] 5.0 Fishbase, 2006
Salmo salar 3-4 [Not specified] 3.5 Kerr and Grant, 1999
Salmo trutta fario 2 2.0 Bruslé and Quignard, 2001
Salmo trutta fario 1 [Male] 1.0 Ombredane et al, 2001
Salmo trutta fario 1-3 [Male] 2.0 Fishbase, 2006
Salmo trutta fario Most at 3 [No specified, but males attain maturity at an earlier age than females] 3.0 Kerr and Grant, 1999
Salmo trutta fario 3.0 [Both sex] 3.0 Olden et al, 2006
Salmo trutta fario Males: Age I [32%], age II [79], age III [93%] and age IV [100%] 32.0 Taure, 1976
Salmo trutta fario Spawning males were significantly younger 2+ and 4+ years. The oldest male was 6+ years 2.0 Rubin et al, 2005
Salmo trutta fario It matures at age 2 and 4 years and males usually mature one year earlier than females. 2.0 Randak et al, 2006
Salvelinus alpinus 2 [weak proportion] 2.0 Guillard et al, 1992
Salvelinus alpinus 2-3 2.5 Bruslé and Quignard, 2001
Salvelinus alpinus 4-5 [Male] 4.5 Fishbase, 2006
Salvelinus alpinus 5-7 [Male] 6.0 Pavlov et al, 1994
Salvelinus alpinus Usually mature at 4-5 years of age [Sex not specified] 4.5 Bradbury et al, 1999
Salvelinus alpinus Average age of sexually mature fish from the Fraser River, nothern Labrador was 5.2 for males 5.2 Beddow et al, 1998
Salvelinus alpinus Maturity occurs in the Sylvia Grinnel River at about 12 winters, and in George River at least as early as 7 winters, possibly younger 12.0 Grainger, 1953
Salvelinus alpinus Char in this area reach maturity at 10 years 10.0 Moore, 1975
Salvelinus alpinus 50% of the charr geing seuxally mature at 4-5 year of age [Most males became sexually mature at a higher age than the females] 4.5 Jonsson and Hindar, 1982
Salvelinus alpinus No artic charr younger than 3+ were mature. Males of the 'small charr' started to mature at age 3+. Males of the 'large charr' started to mature sexually at age 4+ 3.0 Sparholt, 1985
Salvelinus fontinalis Mostly 3-4, few at 2 [Both sex] 3.5 Fraser, 1985
Salvelinus fontinalis Usually reach at 3, but could be 2 [Both sex] 3.0 Kerr and Grant, 1999
Salvelinus fontinalis 2.0 [Both sex] 2.0 Olden et al, 2006
Salvelinus fontinalis Sexual maturity was attained by the majority of the brrok trout at the end of their 3rd year of life, although many males and females were mature in 2 years 3.0 Wydoski and Cooper, 1966
Salvelinus namaycush 6-7 [Sex not specified] 6.5 Billard, 1997
Salvelinus namaycush 6-7 [Not specified] 6.5 Scott and Crossman, 1973
Salvelinus namaycush Mostly between 4 to 13 [Both sex], river spawning male trout were found to mature aty 7 [In most cases, males mature over a year earlier than females] 4.0 Kerr and Grant, 1999
Salvelinus namaycush 5.0 [Both sex] 5.0 Olden et al, 2006
Salvelinus namaycush In Labrador, lake trout usually attain sexual maturity in 6-11 years [Not specified] 8.5 Bradbury et al, 1999
Stenodus leucichthys 5-6 5.5 Belyaeva, 2005
Stenodus leucichthys 7-10 [Sex not specified] 8.5 Scott and Crossman, 1973
Stenodus leucichthys 9-11 [Male] 10.0 Fishbase, 2006
Stenodus leucichthys Mass maturation for males at 9-11 [But could be as early as 7] 10.0 Chereshnev et al, 2000
Thymallus thymallus 1-2 1.5 Bruslé and Quignard, 2001
Thymallus thymallus 2 [Male] 2.0 Maitland, 1977
Thymallus thymallus 2-3 [Male] 2.5 Fishbase, 2006
Thymallus thymallus 1-2 for males, but age 2 dominates 1.5 Witkowski and Kowalewski, 1988
Thymallus thymallus Mostly 3-4, but some at 2 [Male] 3.5 Northcote, 1995
Thymallus thymallus 3-4 [Not specified] 3.5 Environment agency, ???
Thymallus thymallus Males mature at age of 3-4 years 3.5 Zaytsev, 1987
Thymallus thymallus A few males were found to be mature at age two. At age three, half og the grayling were mature and by age five years all males and females were mature 2.0 Kristiansen and Doving, 1996
Thymallus thymallus 2 years for males 2.0 Vivier, 1958
Thymallus arcticus Some at 4 for bot sex but most at 6-9 7.5 Scott and Crossman, 1973
Thymallus arcticus Most at 4-5, few at 3 and rarely at 2 [Both sex] 4.5 Northcote, 1995
Thymallus arcticus A few reach sexual maturiy at age 3, about a quarter at age 4 and all by age 5 [Sex not specified] 3.0 Northcote, 1993
Thymallus arcticus 4.0 [Both sex] 4.0 Olden et al, 2006
Thymallus arcticus Fish in the 6- to 9- year group made up 93.5 percent of the run 6.0 Bishop, 1971
Cottus gobio 2-3 [Mixed] 2.5 Fishbase, 2006
Cottus gobio 2-3 [Males] 2.5 Marconato and Bisazza, 1988
Cottus gobio 2 [Not specified] 2.0 Environment agency, ???
Ameiurus nebulosus 3 [Male] 3.0 Scott and Crossman, 1973
Ameiurus nebulosus 3 [Both sex] 3.0 Olden et al, 2006
Ictalurus punctatus 5-8 [Not specified] 6.5 Scott and Crossman, 1973
Ictalurus punctatus 5-8 [Not specified] 6.5 Anonymous, 2006 Chapter 3
Ictalurus punctatus 2 [Both sex] 2.0 Olden et al, 2006
Ictalurus punctatus Can mature as early as 2 years , but broodfish of at 3 years are preferred [ex not specified] 2.0 Legendre et al, 1997
Silurus glanis 3 [Mass maturation at 4-5] 4.5 Zholdasova and Guseva, 1987
Silurus glanis Mas maturation occurs in the 3-4 th year of life. However the maturation rate may be accelerated to 2 year [Sex not specified] 3.5 Orlova, 1987
Silurus glanis 3-4 3.5 Hovarth et al, 1992
Silurus glanis 3-5 [Sex not specified] 4.0 Schlumberger and Proteau, 2001
Silurus glanis 3-4 3.5 Bruslé and Quignard, 2001
Silurus glanis Smallest males belonged at 3 years old [2-3 in other studies] 2.5 Alp et al, 2004
Silurus glanis 2-3 [Male] 2.5 Fishbase, 2006
Osmerus eperlanus Mostly 2-3, rarely 1 and up to 7-8 [Both sex] 2.5 Belyanina, 1969
Osmerus eperlanus Mostly 2-3 [Both sex] 2.5 Buckley, 1989
Osmerus eperlanus 2 [Sometimes 1, sex not specified] 2.0 Rochard, 2001
Osmerus eperlanus 1+ or 2+ [Both sex] 1.0 Quigley et al, 2004