The most abundant anadromous fish in the Columbia River basin is not salmon, nor is it steelhead. It is non-native shad, which outnumbers the basin’s iconic species in the river by millions of fish.
The most abundant anadromous fish in the Columbia River basin is not salmon, nor is it steelhead. It is non-native shad, which outnumbers the basin’s iconic species in the river by millions of fish.