HomeFish encyclopediaHagfishesHagfishesHagfishesCortez hagfish Cortez hagfish (Eptatretus sinus) Scientific name: Eptatretus sinus Wisner & McMillan, 1990 The Cortez hagfish (Eptatretus sinus) is a marine fish of the family Myxinidae. Native range: Eastern Central Pacific, Gulf of California. Species factsScientific nameEptatretus sinusFamilyMyxinidae (Hagfishes)OrderMyxiniformes (Hagfishes)ClassMyxini (Hagfishes)Maximum length48.1Depth range198–1330 m (650–4364 ft)EnvironmentMarine; bathydemersal; non-migratory; depth range 198 - 1330 mClimateDeep-waterDistributionEastern Central Pacific: Gulf of California.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 years (Fec assumed to be SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026