No detailed citation.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Perca fluviatilis | Female | Maximum GSI value | 21.3-24.3% [Immediatly prior to spawning] | 22.8 percent |
| Perca fluviatilis | Male | Onset of spermatogenesis | August | ['August'] |
| Perca fluviatilis | Female | Oogenesis duration | From August until April | No data |
| Perca fluviatilis | Male | Maximum GSI value | 6.6-7.1 [September-October] | 6.85 percent |
| Perca fluviatilis | Female | Resting period | 4-4.5 [From April until August] | 4.25 months |
| Perca fluviatilis | Male | Main spermatogenesis activity | September-October, then decrease slightly until spawning and remain at about 5% during winter | ['March', 'January', 'September', 'February', 'October'] |
| Perca fluviatilis | Female | Onset of oogenesis | GSI rise steadily in August | ['August'] |
| Perca fluviatilis | Female | Intensifying oogenesis activity | Steadily increase from August until April | ['April', 'August'] |
| Perca fluviatilis | Male | Resting period | 0.2 [June, July] | 0.2 months |
| Perca fluviatilis | Spawning conditions | Spawning release | All eggs are shed in a single batch | Mutliple |