HomeFish encyclopediaRay-finned fishesPerch-like fishArmorheadsPelagic armourhead Pelagic armourhead (Pseudopentaceros richardsoni) Scientific name: Pseudopentaceros richardsoni Smith, 1844 The Pelagic armourhead (Pseudopentaceros richardsoni) is a marine fish of the family Pentacerotidae. BiologyDorsal spines (total): 14 - 15; Dorsal soft rays (total): 8-10; Anal spines: 4 - 5; Anal soft rays: 7 - 8. Head and body bluish above, pale below.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudopentaceros richardsoniFamilyPentacerotidae (Armorheads)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length56.0Depth range0–1000 m (0–3281 ft)EnvironmentMarine; pelagic-oceanic; depth range 0 - 1000 mClimateTemperateDistributionSoutheast Atlantic: Tristan de Cunha and South Africa. Western Indian Ocean: South Africa. South Pacific: southern Australia and New Zealand and Cape Horn, Chile. North Pacific records refers to pectoralis.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=4) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026