The search for blue catfish
![The search for blue catfish](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/blue%20catfish2.jpg?itok=HylCkVgx)
Detailed Description
The search for blue catfish
Result of low-frequency electrofishing on the tidal Potomac River near Washington DC. This photograph was taken using a GoPro camera mounted on a 20 ft. staff. This configuration was used to acquire an accurate count of all blue catfish affected by the electric current before they recover from galvanotaxis.
Sources/Usage
Public Domain.