; subclass Actinopterygii, order Salmoniformes)
A fairly large family of deep-sea fish that have slender bodies, with a small head and small eyes, but a wide mouth. Both the dorsal and anal fins are located very close to the small tail fin. The fish are scaleless, but bear rows of small photophores along the sides of the body. Many species possess a chin barbel. There are at least 90 species, found in all oceans.
Subjects: Zoology and Animal Sciences.