Kuznetsov, V.A. and Khalitov, N.Kh. (1978) Alterations in the fecundity and egg quality of the roach, Rutilus rutilus in connection with different feeding conditions. J. Ichthyol., pp. 63-70
| Species | Development state | Trait | Primary Data | Secondary Data |
| Rutilus rutilus | Egg | Oocyte diameter | 1.27-1.33 | 1.3 mm |
| Rutilus rutilus | Female | Relative fecundity | 123.5-167.8 | 145.65 thousand eggs/kg |
| Rutilus rutilus | Female | Absolute fecundity | 12.4-23.7 | 18.05 thousand eggs |