Dlaboga, D. and Bartel, R. and Bieniarz, K. and Epler, P. (1998) Relation between egg size and body size and age of females in brook trout (Salvelinus fontinalis Mitchill). Archiwum rybactwa polskiego/Archives of Polish fisheries. Olsztyn [Arch. Ryb. Pol./Arch. Pol. Fish.], pp. 27-35
| Species | Development state | Trait | Primary Data | Secondary Data |
| Salvelinus fontinalis | Egg | Egg size after water-hardening | 3.69-5.95 [Fully swollen egg, measured 1 hour after water contact] | 4.82 mm |