HomeFish encyclopediaRay-finned fishesSawbelliesSpinyfinsSilver spinyfin Silver spinyfin (Diretmus argenteus) Scientific name: Diretmus argenteus Johnson, 1864 The Silver spinyfin (Diretmus argenteus) is a marine fish of the family Diretmidae. BiologyDorsal spines: 1; Dorsal soft rays: 25-29; Anal spines: 1; Anal soft rays: 18 - 24; Vertebrae: 27 - 29. Body black dorsally, silvery on sides. Branchiostegal rays: 7-8. Body deep, heavy, sides straight. Large adults very dark brown.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameDiretmus argenteusFamilyDiretmidae (Spinyfins)OrderBeryciformes (Sawbellies)ClassActinopterygii (Ray-finned fishes)Maximum length27.6Common length9.0Depth range0–2000 m (0–6562 ft)EnvironmentMarine; bathypelagic; depth range 0 - 2000 m, usually 500 - 700 mClimateDeep-waterDistributionCircumglobal: In tropical to temperate waters. Eastern Atlantic: Iceland and British Isles to South Africa including Canary Islands and Ascension Island. Northwest Atlantic: Canada. Not recorded from the Mediterranean.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of potential interest SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026