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| Species | Development state | Trait | Primary Data | Secondary Data |
| Gasterosteus aculeatus | Male | Onset of spermatogenesis | September | ['September'] |
| Gasterosteus aculeatus | Male | Main spermatogenesis activity | In October the testes are to a large extent filled with spermatocytes and spermatids. Sepermatogenesis is completed in November-January | ['January', 'October', 'November'] |
| Gasterosteus aculeatus | Male | Maximum GSI value | The peak of the GSI is reached in October, about a mean of 1.4, up to 1.6, and is followed by a gradual decline until August when the lowest values are reached | 1.4 percent |
| Gasterosteus aculeatus | Spawning conditions | Spawning season | May-June | ['May', 'June'] |