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Fish shocking in Menomonee River at Wauwatosa, Wisconsin

Detailed Description

Fish sampling using a backpack shocker. USGS scientists use a backpack-mounted electrofishing device to sample fish communities in the Menomonee River at Wauwatosa, WI (MENOMONEE RIVER AT WAUWATOSA, WI - USGS Water Data for the Nation), near 70th Street. Electrofishing momentarily stuns the fish with an electrical shock; they are netted, identified and measured, then released alive to the stream as quickly as possible to reduce any stress. The shock does not harm the fish and does not cause lasting effects.


Public Domain.