(Family): Eye round, directed laterally. Body greatly compressed, naked; neither scales nor pores along lateral line area. A black band along middorsal line of body. Dorsal fin small, located slightly behind middle of total length. Teeth on jaws and palatine in a single row, all fixed, except the anterior teeth in premaxillary depressed. Lower jaw and palatine with a few enormously enlarged, lanceolated teeth. Adipose fin present. No luminous organ. (Genus and Species): One genus and species in the family.
Distribution:
Tropical and subtropical waters of Atlantic, Pacific, and Indian oceans. (Fujii)