HomeFish encyclopediaRay-finned fishesPricklefishes, Bigscales and GibberfishesBigscale fishes or ridgeheadsSlender bigscale Slender bigscale (Melamphaes acanthomus) Scientific name: Melamphaes acanthomus Ebeling, 1962 The Slender bigscale (Melamphaes acanthomus) is a marine fish of the family Melamphaidae. Native range: Eastern Pacific, California, USA to Panama. Reported from Chile. BiologyJuvenile samples were collected at depths of 250 - 500 meters, whereas adults at 700 - 3,500 meters. Minimum depth from.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMelamphaes acanthomusFamilyMelamphaidae (Bigscale fishes or ridgeheads)OrderStephanoberyciformes (Pricklefishes, Bigscales and Gibberfishes)ClassActinopterygii (Ray-finned fishes)Depth range0–3500 m (0–11483 ft)EnvironmentMarine; bathypelagic; depth range 0 - 3500 mClimateDeep-waterDistributionEastern Pacific: California, USA to Panama. Reported from Chile.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026