HomeFish encyclopediaRay-finned fishesPerch-like fishJawfishesLongtailed jawfish Longtailed jawfish (Lonchopisthus sinuscalifornicus) Scientific name: Lonchopisthus sinuscalifornicus Castro-Aguirre & Villavicencio-Garayzar, 1988 The Longtailed jawfish (Lonchopisthus sinuscalifornicus) is a marine fish of the family Opistognathidae. Native range: Eastern Central Pacific, Gulf of California. BiologyDorsal spines (total): 11; Dorsal soft rays (total): 17-19; Anal spines: 3; Anal soft rays: 17 - 18. Body somewhat elongated, narrowing posteriorly; head and mouth large; caudal fin lanceolate and much longer than total length of head; head and body cinnamon or cream with diffuse bluish spots. Operculum with an intense blue spot; median fins violet.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLonchopisthus sinuscalifornicusFamilyOpistognathidae (Jawfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length30.0Common length20.0Depth range10–40 m (33–131 ft)EnvironmentMarine; demersal; depth range 10 - 40 mClimateTropicalDistributionEastern Central Pacific: Gulf of California.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026