Click on the link I provided and then click on the Puget Sound River Sockeye. They are wild fish that spawn in the river and rear possibly in the saltwater. Could have been started by strays and have grown in number (still only a few dozen to coupel hundred). They really are a mystery.
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They say that the man that gets a Ph.D. is the smart one. But I think that the man that learns how to get paid to fish is the smarter one.