The European barbel, pike, pikeperch, sea lamprey, and Twaite shad, all from the River Severn, United Kingdom, were tagged with acoustic tags and tracked for over five years. The movement of the fish are traced through this animation.

The European barbel, pike, pikeperch, sea lamprey, and Twaite shad, all from the River Severn, United Kingdom, were tagged with acoustic tags and tracked for over five years. The movement of the fish are traced through this animation.