Kopiejewska, W. (1993) Reserves of oocytes of protoplasmatic growth in the ovaries of bream, Abramis brama (L.), females from lake Kortowskie and lake Blanki. Acta Ichthyologica et Piscatoria [ACTA ICHTHYOL. PISC.], pp. 19-32
| Species | Development state | Trait | Primary Data | Secondary Data |
| Abramis brama | Female | Absolute fecundity | Mean of 102.0 (range 20.8-309.6) n = 24 in Kortowski Lake and mean of 182.2 (range 46.4-321.3) n = 30 in Blanki Lake | 165.2 thousand eggs |