No detailed citation.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Gobio gobio | Male | Onset of spermatogenesis | From December increase regularly | ['December'] |
| Gobio gobio | Male | Main spermatogenesis activity | May and mid-June | ['May', 'June'] |
| Gobio gobio | Male | Maximum GSI value | 2.3 [June, prior to spawning] | 2.3 percent |
| Gobio gobio | Male | Spermatogenesis duration | During autumn and finish at the end of spring | 7.0 months |
| Gobio gobio | Male | Resting period | 0.9 [September to October] | 3.0 months |