Rainbow Trout / Steelhead Trout

Oncorhynchus mykiss

Family: Salmonidae
Etymology: Onco = bent; rhynchus = nose or snout; mykiss = Russian word for trout

Rainbow Trout

Steelhead Trout are the anadromous form of Rainbow Trout.

Research on Steelhead done by Sac State researchers

Bajjaliya, F.S., Titus, R.G. Ferreira, J.R. and R.M. Coleman (2014) Morphometric variation among four distinct population segments of California steelhead trout. California Fish and Game 100:703-726.  pdf

Resources

Wikipedia