Korzelecka, 1998



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Associated characteristics


Species Development state Trait Primary Data Secondary Data
Perca fluviatilis Spawning conditions Spawning substrate Bottom overgrown with a variety of submerged plants, and with patches of emergent vegetation. Underwater sandy and gravel bottom elevations are also preferred by this fish Ambiguous
Perca fluviatilis Female Age at sexual maturity Sexual maturity is attained by perch males at the age of 2-3 years, but also 1-3 2.5 years
Perca fluviatilis Egg Degree-days for incubation This study: 126 [At 14°C] [The number of thermal untis (D°) from egg fertilization to hatching varies within a surprisingly wide range (if one is to believe different authors) from 90 through 175 at 12-14°C, to as many as 223 and 195] 13.0 °C * day
Perca fluviatilis Egg Temperature for incubation Incubated at 14 [The best and longest larvae originate from eggs incubated in 12-16°C] 14.0 °C
Perca fluviatilis Egg Egg size after water-hardening Swollen egg (without jelly enveloppe, 50 min. after the fertilization) measured 1.25 mm on the average 1.25 mm
Perca fluviatilis Female Absolute fecundity 12-300 depedning on female 156.0 thousand eggs
Perca fluviatilis Spawning conditions Spawning season Spawnings in natural conditions in early spring, commecing from March in south regions and from June in the north ['April', 'March', 'May', 'June']
Perca fluviatilis Larvae Initial larval size Length of the hatchlings was 3.5 mm on the average [Other studies: newly hatched perch larvae are from 4 to 5.3 mm long, also described at 6.5 mm and 3-6] 4.5 mm
Perca fluviatilis Female Age at sexual maturity 3-4 [Female], but also 2-4 3.5 year