Maze Learning and Recall in a Weakly Electric Fish, Mormyrus rume proboscirostris Boulenger (Mormyridae, Teleostei) 1

Mormyrus rume proboscirostris , African weakly electric fish, were trained to seek shelter in a meander maze, and following path acquisition released into the empty arena with all maze cues removed, either from the original start box or from a novel site (recall). We demonstrate that fish use their active electrosense, sight, and lateral line synergistically in maze acquisition and recall. In the presence of an electric roadmap consisting of an array of aluminum and Plexiglas objects, fish employed landmark orientation. But fish ignored visual markers and relied on internalized motor routines, which was inconsistent with evidence for cognitive mapping.