HomeFish encyclopediaRay-finned fishesPerch-like fishCod icefishesSharp-spined notothenia Sharp-spined notothenia (Trematomus pennellii) Scientific name: Trematomus pennellii Regan, 1914 The Sharp-spined notothenia (Trematomus pennellii) is a marine fish of the family Nototheniidae. Native range: Southern Ocean, Scotia Arc, South Orkney Islands, Davis and Ross seas. BiologyLives on seafloor and spawns during summer. Feeds primarily on errant polychaetes, with lesser amounts of amphipods, fish eggs and mollusks.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTrematomus pennelliiFamilyNototheniidae (Cod icefishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length24.0Depth range0–732 m (0–2402 ft)EnvironmentMarine; demersal; depth range 0 - 732 m, usually 1 - 112 mClimatePolarDistributionSouthern Ocean: Scotia Arc, South Orkney Islands, Davis and Ross seas.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Fec = 2,500) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026