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| Species | Development state | Trait | Primary Data | Secondary Data |
| Alosa alosa | Female | Age at sexual maturity | 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 years |
| Alosa alosa | Female | Age at sexual maturity | 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 year |