Kopiejewska, W. and Terlecki, J. and Chybowski, L. (2003) Varied somatic growth and sex cell development in reciprocal hybrids of roach Rutilus rutilus (L.) and ide Leuciscus idus (L.). Archives of Polish Fisheries/Archiwum Rybactwa Polskiego [Arch. Pol. Fish./Arch. Ryb. Pol.], pp. 33-44
| Species | Development state | Trait | Primary Data | Secondary Data |
| Rutilus rutilus | Female | Onset of oogenesis | Vitellogenesis starts in September and proceeds up to spawning | ['September'] |
| Rutilus rutilus | Female | Oogenesis duration | From September until May | 9.0 months |
| Rutilus rutilus | Spawning conditions | Spawning season | May | ['May'] |
| Rutilus rutilus | Spawning conditions | Spawning release | Spawn a single time per spawning season | Total |