Bonislawska, M. and Winnicki, A. (2000) Duration of embryonic development and S/V (Surface/volume) coefficient in fish eggs. Archives of Polish Fisheries/Archiwum Rybactwa Polskiego [Arch. Pol. Fish./Arch. Ryb. Pol.], pp. 161-169
| Species | Development state | Trait | Primary Data | Secondary Data |
| Leucaspius delineatus | Egg | Egg size after water-hardening | 1.1-1.3 [After swelling] | 1.2 mm |
| Esox lucius | Egg | Egg size after water-hardening | 2.5-2.9 [Swollen eggs] | 2.7 mm |