Lantern Fish, one of a group of about 100 species of fish that live chiefly at great depths in the ocean. The name comes from the cluster of glowing spots on the body. A lantern fish is usually two to four inches (5 to 10 cm) long and is either black or blue. For its size, it has an unusually large head and eyes. Some species rise to the surface at night and on sunless days.
Lantern fish belong to the family Myctophidae of the order Myctophiformes.