ABSTRACTThis paper deals with selective breeding of rainbow trout (Salmo gairdneri), rainbow‐steelhead hybrids, and chinook salmon (Oncorhynchus tshawytscha). After 38 years of selection male rainbow trout reach maturity their first year at an average weight of 680 g. Females mature their second year at an average weight of 4.5 kg and produce about 9,000 eggs. Top production was from a 3‐year‐old female who produced 23,489 eggs. Interracial crosses produced rainbow‐steelhead hybrids that grew faster than the steelhead stock but slower than the rainbow stock. Improvements in chinook salmon have been made through selective breeding. Egg production for the 3‐year‐old females has increased from an average of 3,800 per female in 1960 to about 5,