No detailed citation.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Hucho hucho | Egg | Oocyte diameter | 4.5-6 [Not specified] | 5.25 mm |
| Hucho hucho | Egg | Temperature for incubation | 7°C | 7.0 °C |
| Hucho hucho | Egg | Degree-days for incubation | 294 at 7°C | 294.0 °C * day |
| Hucho hucho | Larvae | Larvae behaviour | The larvae keep close to the ground, near the spawning place | Demersal |
| Hucho hucho | Larvae | Temperature during larval development | The maximum temperature for the alevin is 12°C | 12.0 °C |
| Hucho hucho | Larvae | Full yolk-sac resorption | The period from hatching to the loss of the yolk sac is 164.1 DD | 164.1 °C * day |
| Hucho hucho | Female | Age at sexual maturity | The female reach sexual maturity at the age of 5 years, but also described at 3 or 4 | 5.0 year |
| Hucho hucho | Female | Length at sexual maturity | At the age of 5 years, female are 65-70 cm long | 67.5 cm |
| Hucho hucho | Female | Weight at sexual maturity | At the age of 5 years, female weights about 3.5 | 5.0 kg |
| Hucho hucho | Female | Absolute fecundity | 2.4 [For female 3-5 kg], 3-4 [4-5 kg], 5-6 [6-8 kg], 8-12 [10-12 kg], 18.6 [18 kg] | 4.0 thousand eggs |
| Hucho hucho | Male | Male sexual dimorphism | The males undergo marked colour changes, turning red or copper-red | Absent |
| Hucho hucho | Spawning conditions | Spawning migration distance | Does not undertake large migrations. Unless disturbed, it makes only local migrations in seach of spawning places | No data |
| Hucho hucho | Spawning conditions | Spawning season | Spring spawner, it spawns in March and April | ['March', 'April', 'May', 'June'] |
| Hucho hucho | Spawning conditions | Spawning period duration | In Poland, the spawning time is between April 20 and 26, in Yugoslavia in the Drava river, between march 18 and 22 | 20.0 weeks |
| Hucho hucho | Spawning conditions | Spawning temperature | 5-10, mainly 5-6°C | 7.5 °C |
| Hucho hucho | Spawning conditions | Spawning water type | Upper courses of highland rivers, where the stream runs fairly rapidly | No category |
| Hucho hucho | Spawning conditions | Spawning depth | 30-60 cm | 45.0 m |
| Hucho hucho | Spawning conditions | Spawning substrate | Bottom is covered with gravel or coarse sand | Lithophils |
| Hucho hucho | Spawning conditions | Spawning site preparation | Female sets to work to scoop out a shallow, saucer-like depression, 25-60 cm deep, by means of vigorous, flapping movements of her body and tail, may take several days [During the spawning period, the males are generally very fierce, driving away intruders with great pugnacity and vigour, or engagin in formal combats with other males] | No category |
| Hucho hucho | Spawning conditions | Parity | Spawning takes place once a year | Iteroparous |
| Hucho hucho | Spawning conditions | Parental care | There is no parental care during the hatching or embryonic phase [After spawning, the parent fish go downstream and keep close to deep places and rocks] | No care |