Actually the great lakes are an ocean for anadromous fish. They behave exactly the same as coastal fish. we have steelhead, chinook and coho salmon. All spend the same amount of time in the lakes as coastal fish do in the ocean, then return up rivers to spawn and die. The steelhead and anadromous brown trout do not die after spawning.
The steelhead have infact come from some prolific west coast rivers.. the Smith, Chetco and some BC fish are used for the gene pool.
The interesting thing here is there is practically no successful spawning (except the german browns) so the anadromous fishery is almost completely hatchery dependant.
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