HomeFish encyclopediaRay-finned fishesPerch-like fishDrums or croakersGuyanan croaker Guyanan croaker (Pachypops fourcroi) Scientific name: Pachypops fourcroi Lacep?de, 1802 The Guyanan croaker (Pachypops fourcroi) is a freshwater fish of the family Sciaenidae. Native range: South America, Amazon and Orinoco River basin, and rivers of the Guianas. BiologyInhabits estuaries but mainly in streams where it may be found very high beyond major waterfalls. Preys on fish. Little is known about its biology but it may form small schools. An important foodfish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePachypops fourcroiFamilySciaenidae (Drums or croakers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length25.0EnvironmentFreshwater; benthopelagicClimateTropicalDistributionSouth America: Amazon and Orinoco River basin, and rivers of the Guianas.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial; aquaculture: commercialResilienceHigh, minimum population doubling time less than 15 months (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