No detailed citation.
| Species | Development state | Trait | Primary Data | Secondary Data |
| Barbatula barbatula | Female | Age at sexual maturity | 2 | 2.0 year |
| Barbatula barbatula | Female | Length at sexual maturity | 5.2-6.7 | 5.95 cm |
| Barbatula barbatula | Female | Onset of oogenesis | The GSI remained low during July and early August and increased thereafter | ['July', 'August'] |
| Barbatula barbatula | Female | Intensifying oogenesis activity | The dynamics of GSI values and oocyte diameters in Estonia suggests that gonad reach stage IV (gonads with full-grown oocytes) already by late autumn (November) | ['October', 'November', 'December'] |
| Barbatula barbatula | Female | Maximum GSI value | 7.5-23.9 [November-December] and 16.3-24.6 [May] | 15.7 percent |
| Barbatula barbatula | Female | Resting period | 1 [Short] | 1.0 months |
| Barbatula barbatula | Female | Resting period | 2-8 [In July and beginning of August] | 5.0 months |
| Barbatula barbatula | Male | Length at sexual maturity | 5.1-6.6 | 5.85 cm |
| Barbatula barbatula | Male | Main spermatogenesis activity | August | ['August'] |
| Barbatula barbatula | Male | Maximum GSI value | 1.5-2 [Beginning of the spawning season] | 1.75 percent |
| Barbatula barbatula | Male | Resting period | 0.3-0.7 [Minimal value in mid-July, and by August GSI increased to about 1% and remained at this level until the next spring] | 6.0 months |
| Barbatula barbatula | Spawning conditions | Spawning season | Late April-Early August [England], May-June [Estonia], May and less June [Finland] | ['April', 'May', 'June', 'August'] |
| Barbatula barbatula | Spawning conditions | Spawning period duration | 12-14 [England], 4 [Estonia] and 4 [Finland] | 13.0 weeks |
| Barbatula barbatula | Spawning conditions | Spawning release | One period of spawning | No category |
| Barbatula barbatula | Spawning conditions | Spawning release | About 4 [England], 2-3 [Estonia] and 1 [Finland] | No category |