HomeFish encyclopediaRay-finned fishesCusk eelsCusk-eelsLongnose cusk-eel Longnose cusk-eel (Ophidion antipholus) Scientific name: Ophidion antipholus Lea & Robins, 2003 The Longnose cusk-eel (Ophidion antipholus) is a marine fish of the family Ophidiidae. Native range: Western Atlantic. USA (Florida) and Mexico (Yucatan). BiologyDorsal soft rays (total): 111-133; Anal soft rays: 94 - 103; Vertebrae: 65 - 69. This species is characterized by the following features: D 111-133 (usually 116-123); A 94-103; pectoral fin rays 18 or 19 (rarely 20 or 21); precaudal vertebrae 15-17 (usually 16), caudal vertebrae 49-53 (usually 50-52), total vertebrae 65-69 (usually 66-68); lower arm of first gill arch with 5 or 6 developed rakers; rounded head profile with mouth distinctly inferior; dorsal and ventral profiles of body nearly parallel for much of its length; unmarked body; short and unequal pelvic-fin rays, longer reaching to point directly under anterior edge of opercle.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOphidion antipholusFamilyOphidiidae (Cusk-eels)OrderOphidiiformes (Cusk eels)ClassActinopterygii (Ray-finned fishes)Maximum length21.0Depth range10–69 m (33–226 ft)EnvironmentMarine; benthopelagic; depth range 10 - 69 m, usually 15 - 40 mClimateSubtropicalDistributionWestern Atlantic. USA (Florida) and Mexico (Yucatan).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026