HomeFish encyclopediaRay-finned fishesPerch-like fishCod icefishesBlunt scalyhead Blunt scalyhead (Trematomus eulepidotus) Scientific name: Trematomus eulepidotus Regan, 1914 The Blunt scalyhead (Trematomus eulepidotus) is a marine fish of the family Nototheniidae. Native range: Southern Ocean, continental shelf of Antarctica and nearby islands, including the South Orkney. BiologyMost common in shallower waters of the continental shelf, especially on banks less than 250 m deep in areas where local upwellings increase food supply. Juveniles are found near the surface, often in association with Antarctic krill (Euphausia superba) swarms. Feed on salps, nudibranchs, amphipods, copepods, polychaetes, krill, crustaceans, chaetognaths, and fishSource: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTrematomus eulepidotusFamilyNototheniidae (Cod icefishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length34.0Depth range70–650 m (230–2133 ft)EnvironmentMarine; demersal; depth range 70 - 650 mClimatePolarDistributionSouthern Ocean: continental shelf of Antarctica and nearby islands, including the South Orkney.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Fec = 1,400) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026