HomeFish encyclopediaRay-finned fishesCharacinsTrahirasGiant trahira Giant trahira (Hoplias macrophthalmus) Scientific name: Hoplias macrophthalmus Pellegrin, 1907 The Giant trahira (Hoplias macrophthalmus) is a freshwater fish of the family Erythrinidae. Native range: South America, Amazon and Orinoco River basins and coastal rivers in Guyana, Suriname, and French Guiana. Species factsScientific nameHoplias macrophthalmusFamilyErythrinidae (Trahiras)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length100.0EnvironmentFreshwater; benthopelagicClimateTropicalDistributionSouth America: Amazon and Orinoco River basins and coastal rivers in Guyana, Suriname, and French Guiana.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026