HomeFish encyclopediaRay-finned fishesPerch-like fishJacks and pompanosLongfin trevally Longfin trevally (Carangoides armatus) Scientific name: Carangoides armatus R?ppell, 1830 The Longfin trevally (Carangoides armatus) is a brackish-water fish of the family Carangidae. BiologyDorsal spines (total): 9; Dorsal soft rays (total): 21-22; Anal spines: 3; Anal soft rays: 17. Deep body. Breast without scales. The snout is sub equal in length to the eye. The first dorsal and anal fins become prolonged with growth. Males have prolonged middle rays of the soft dorsal fin.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCarangoides armatusFamilyCarangidae (Jacks and pompanos)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length57.0Common length30.0EnvironmentMarine; brackish; reef-associatedClimateTropicalDistributionIndo-West Pacific: Red Sea, Gulf of Oman and along the African coast (to East London in South Africa, ) and the west coast of Madagascar to southern India and Sri Lanka. There are reliable reports from the Gulf of Thailand, Hong Kong, Okinawa and Japan.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial; gamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026