Steelhead trout are migratory rainbow trout. They are born in freshwater, migrate to the ocean for their adult lives, and then return to freshwater to reproduce. The offspring of two steelhead parents may become a purely freshwater form of rainbow trout, and the offspring of two resident freshwater rainbow trout might evolve into migratory steelhead trout.
Publication date
Type of document
Fact Sheet
Program
Species
FWS Focus