It has long been assumed that when one brown ghost knifefish “chirps” at another knifefish by altering the electrical field it produces, it is communicating with the other fish. But it appears ...

Researchers have created an underwater robot that swims in any direction using just one fin, inspired by the black ghost knife fish.

This is a juvenile of the brown ghost knifefish (Apteronotus leptorhynchus).

Nature 423, 77–81 (2003). In this Letter, we inadvertently omitted to give the species name, Apteronotus leptorhynchus (brown ghost knife-fish), of the weakly electric fish used in our study.

Researchers at Northwestern University are developing robot fish to help them better understand movement systems and how they work with sensory systems. By experimenting with robots that move like ...

01-19-2011 TECH Robotic Ghost Knifefish Swims in Every Direction, Causes Brainiacs to High-Five [Video] The robot imitates a bizarre fish with a ribbon-like fin enabling underwater acrobatics.