Columbia River basin salmon and steelhead from the same species, but of differing stocks, enter the river’s estuary and the ocean at different times and at different sizes, a variation that contributes to the resilience of the fish.
Columbia River basin salmon and steelhead from the same species, but of differing stocks, enter the river’s estuary and the ocean at different times and at different sizes, a variation that contributes to the resilience of the fish.