The Rainbow Trout lives most of its life in freshwater and migrates into estuaries upon maturation .
The most common types of rainbow trout that lives in Alaska are the stream - resident and the Steelhead .
The Steelhead   lives most of Alaska 's life in freshwater and migrates into estuaries upon maturation .
The most common types of rainbow trout that lives in Alaska are the stream - resident and the Steelhead .