Jim is correct. DNA wise there's not a whit's bit of difference. Some ocean connected river Rainbows just 'desire' to take a 2-3 year side trip into the North Pacific Ocean. Steelhead will usually spend 1.5 to 2 years in their natal river then migrate to the Ocean.
Edit: Isn't a 'sea trout' part of the Brown Trout family of fish?
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Last edited by fredaevans; 28-12-2010 at 09:51 AM.
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