Kaeriyama, M. and Urawa, S. and KFukuwaka, M. (1995) Variation in body size, fecundity, and egg size of sockeye and kokanee salmon, Oncorhynchus nerka, released from hatchery. Scientific Reports of the Hokkaido Salmon Hatchery, pp. 1-9
| Species | Development state | Trait | Primary Data | Secondary Data |
| Oncorhynchus nerka | Egg | Egg size after water-hardening | 5.0 [Kokanee] and 5.0-5.6 [Sockeye] for water-hardened egg | 5.3 mm |
| Oncorhynchus nerka | Female | Length at sexual maturity | Average of 24.9 [Kokanee] and 41.0-49.8 [Sockeye] | 45.4 cm |
| Oncorhynchus nerka | Female | Relative fecundity | Absolute fecundity averages range from 1988 to 1994: 316 [Weight 111 g], 330 [Weight 168 g], 401 [Weight 202 g], 454 [Weight 174 g], 412 [159 g], 435 [176 g] and 666 [280 g] | 1988.0 thousand eggs/kg |
| Oncorhynchus nerka | Female | Absolute fecundity | Average of 0.43 [Kokanee] and 1.875-2.477 [Sockeye] | 2.18 thousand eggs |
| Oncorhynchus nerka | Female | Maximum GSI value | Average of 16.8 [Kokanee] and 17.4-17.6 [Sockeye] | 17.5 percent |