Lancetfishes are large oceanic predatory fishes in the genus Alepisaurus in the monogeneric family Alepisauridae.
Lancetfish
A lancetfish model in the Smithsonian National Museum of Natural History in Washington, DC
A small lancetfish, photo by Dr. Jon A. Moore
A small lancetfish tattered from capture by a trawling net, photo by Dr. Jon A. Moore
Aulopiformes is a diverse order of marine ray-finned fish consisting of some 15 extant and several prehistoric families with about 45 genera and over 230 species. The common names grinners, lizardfishes and allies, or aulopiforms are sometimes used for this group. The scientific name means "Aulopus-shaped", from Aulopus + the standard fish order suffix "-formes". It ultimately derives from Ancient Greek aulós + Latin forma, the former in reference to the elongated shape of many aulopiforms.
Aulopiformes
A shortnose greeneye, Chlorophthalmus agassizi (Chlorophthalmoidei: Chlorophthalmidae)
Lestrolepis japonica (Alepisauroidei: Paralepididae)
Reconstruction of Enchodus petrosus from the Cretaceous of the Western Interior Seaway (Enchodontoidei: Enchodontidae)