Jungwirth, M. (1978) Some notes to the farming and conservation of the Danube salmon (Hucho hucho). Env. Biol. Fish., pp. 231-234
| Species | Development state | Trait | Primary Data | Secondary Data |
| Hucho hucho | Egg | Incubation time | About 3 weeks at 12°C | 3.0 days |
| Hucho hucho | Egg | Temperature for incubation | 12°C | 12.0 °C |
| Hucho hucho | Larvae | Onset of exogeneous feeding | Two or three weeks later they begin feeding (at 12°C) | 12.0 °C * day |
| Hucho hucho | Female | Age at sexual maturity | First spawning takes place when fish are 4 or 5 years old [Sex not specified] | 4.0 year |
| Hucho hucho | Female | Weight at sexual maturity | First spawning takes place when fish are 3 or 4 kg [Sex not specified] | 3.0 kg |
| Hucho hucho | Female | Relative fecundity | 1.2-1.5 | 1.35 thousand eggs/kg |
| Hucho hucho | Male | Weight at sexual maturity | First spawning takes place when fish are 3 or 4 kg [Sex not specified] | 3.0 kg |
| Hucho hucho | Spawning conditions | Spawning season | Depending on the local water temperature spawning takes place between the middle of March and end of April | ['March', 'April'] |
| Hucho hucho | Spawning conditions | Spawning depth | Average depth of one meter | No data |
| Hucho hucho | Spawning conditions | Spawning substrate | Fist-sized loose gravel | Lithophils |
| Hucho hucho | Spawning conditions | Parity | They are known to spawn up to 12 times per lifetime | No category |