(Genus):Eye small. Base of dorsal fin shorter than that of anal. Both sexes with supracaudal and infracaudal luminous glands, these glands consisting of a series of overlapping scale-like structures not bordered by black pigment. SAO strongly angulated. Four VO. Five PO; PO4 highly elevated. Two Pol. Four Prc, often continuous with AOp. (Species):Pectoral fins long, extending beyond anal fin origin. No cheek photophores. No luminous scale at base of adipose fin. SAO1 posterior to VO3. Prc2〜4 in a straight line. Prc separated from AOp. VLO directly above VO1. INGL extending along entire ventral aspect of caudal peduncle.
Distribution:
Tropical waters of three major oceans. Type locality-North Atlantic. (Fujii)