Alepisaurus ferox

Alepisaurus ferox, Longnose Lancet Fish. Source: NOAA.
Alepisaurus ferox, Longnose Lancetfish.
SourceSource: NOAA.
FamilyScientific NameAuthorYearCommon Name
AlepisauridaeAlepisaurus feroxLowe1833Longnose Lancetfish

Alepisaurus ferox

Unique Characters: Large (to 2 m) aulopiform fishes, very elongate, slender and compressed flabby body. Snout long, 1/3 to 1/2 head length. Dorsal fin nearly as long as body and sail-like. Dorsal-fin origin over or slightly posterior to pectoral-fin origin. Small adipose fin above posterior part of anal fin. Pectoral fins set very low on body and longer than pelvic fins which are located about midbody. Large mouth with large hollow teeth. No spines present in any fins. Scales absent. Caudal peduncle with midlateral adipose keel. Body iridescent blue-black above, grey-silver below; dorsal fin blue-black.

Similar Species: Shortnose Lancetfish, Alepisaurus. brevirostris. Snout short, 1/4 to 1/3 head length. Dorsal-fin origin distinctly in front of pectoral-fin origin.

Alepisaurus brevirostris, Shortnose Lancetfish. Source: Fishbase
Shortnose Lancetfish – Alepisaurus brevirostris
Source: Fishbase 2025

Gallery

Alepisaurus ferox, Longnose Lancet Fish. Source: NOAA.
Alepisaurus ferox, Longnose Lancetfish. Source: NOAA.