HomeFreshwater aquarium fishOther freshwater fishCastin leatherjacket Castin leatherjacket (Oligoplites saliens) Scientific name: Oligoplites saliens Bloch, 1793 The Castin leatherjacket (Oligoplites saliens) is a brackish-water fish of the family Carangidae. Native range: Western Atlantic, Laguna de Caratasca, Honduras to Montevideo, Uruguay. BiologyFound over soft bottoms of the continental shelf, often inshore and in estuaries. Also pelagic and encountered throughout the water column. May feed on plankton by ram-filtering. Juveniles feed mainly on planktonic crustaceans and chaetognaths, to a minor extent on benthic crustaceans and polychaetes, besides scales taken from larger fishes. Generally spawns in summer. Eggs are pelagic. Marketed mostly fresh.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOligoplites saliensFamilyCarangidae (Jacks and pompanos)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length50.0Common length35.0Depth range40 m (131 ft)EnvironmentMarine; brackish; benthopelagic; depth range ? - 40 mClimateTropicalDistributionWestern Atlantic: Laguna de Caratasca, Honduras to Montevideo, Uruguay.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; aquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More other freshwater fishFreshwater garfishXenentodon cancilaFinescale tigerfishDatnioides microlepisShort-tailed pipefishMicrophis brachyurus brachyurusPumpkinseedLepomis gibbosusLined soleAchirus lineatusSouth American lungfishLepidosiren paradoxaSee all other freshwater fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026