Chelkowski, Z. and Domagala, J. and Wozniak, Z. (1990) The effect of the size of sea trout (Salmo trutta L.) females from Pomeranian rivers on the size of eggs. Acta Ichthyologica et Piscatoria [ACTA ICHTHYOL. PISC.], pp. 59-71
| Species | Development state | Trait | Primary Data | Secondary Data |
| Salmo trutta fario | Egg | Egg size after water-hardening | Swollen egg diameter: 5.225 ± 0.327 (Rega), 5.100 ± 0.319 (Parseta), 5.149 ± 0.285 (Wieprza), 5.090 ± 0.287 (Grabowa) | 5.22 mm |
| Salmo trutta fario | Female | Length at sexual maturity | Length range of mature sea trout females (cm) in Pomeranian rivers: 36-91 (Rega), 34-93 (Parseta), 49-92 (Grabowa) | 63.5 cm |