Some are very small, only growing as little as 2ft, while other species of Catshark can grow up to 5ft.
They are characterized by their elongated, cat-like eyes and two small dorsal fins on their far back. Most have patterns of spots, patches or stripes.
Some Catsharks, such as the Chain Catshark are biofluorescent.
They can be found worldwide in tropical and temperate waters close to the seafloor. They range from coastal waters to 2000 meters deep.
Bony fish and invertebrates.
Most species are nocturnal, sleeping close together during the day and hunting at night.
Males tend to live in open seabeds while females tend to dwell in caves.