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Extended fresh water rearing of pink salmon at a washington usa hatchery


, : Extended fresh water rearing of pink salmon at a washington usa hatchery. Progressive Fish Culturist 40(1): 9-10

Many fish culturists believe that after incubation and 45 days of freshwater rearing, smolts of pink salmon (Oncorhynchus gorbuscha) must then be further reared at salinities of 15-25 .permill. until they are stocked. The rearing of 50,000 pink salmon of the 1971 brood in freshwater was monitored for 135 days. At release the average weight of the fish was 12.4 g (81 fish/kg) and the average fork length, 122 mm; average condition factor was 1.1. A substantial number of these salmon returned to the release site in 1973.

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Related references

Senn, H.; Buckley, RM., 1978: Extended freshwater rearing of pink salmon at a Washington hatchery. About 50 000 fingerlings of pink salmon (Oncorhynchus gorbuscha) from the 1971 brood were reared in fresh water for 135 days before release. The av. wt. of the fry increased from 0.27 to 12.4 g; mortality was only about 2%. A substantial number of...

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