HomeFish encyclopediaHagfishesHagfishesHagfishesSixgill hagfish Sixgill hagfish (Eptatretus hexatrema) Scientific name: Eptatretus hexatrema M?ller, 1836 The Sixgill hagfish (Eptatretus hexatrema) is a marine fish of the family Myxinidae. Native range: Southeast Atlantic, known only from Walvis Bay, Namibia to Durban, South Africa. BiologyCommonly burrows in muddy bottoms. Feeds mostly by scavenging on dead or disabled fish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEptatretus hexatremaFamilyMyxinidae (Hagfishes)OrderMyxiniformes (Hagfishes)ClassMyxini (Hagfishes)Maximum length80.0Depth range10–400 m (33–1312 ft)EnvironmentMarine; demersal; non-migratory; depth range 10 - 400 m, usually 10 - 45 mClimateSubtropicalDistributionSoutheast Atlantic: known only from Walvis Bay, Namibia to Durban, South Africa.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceLow, 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