California's fresh water fish are in trouble, and not just because of the drought, reported Lori Pottinger in the Viewpoints blog published by the Public Policy Institute of California.

Pottinger asked Ted Grantham, UC Cooperative Extension specialist in the Department of Environmental Science Policy and Management at UC Berkeley, whether the state's fish are adapted to periodic droughts.

Drought is one stressor, he said, but there are additional factors imperiling fish.

"California's native fish have been in steady decline for at least 50 years — in part due to dams, habitat...