HomeFish encyclopediaRay-finned fishesPerch-like fishDrums or croakersLa Plata croaker La Plata croaker (Pachyurus bonariensis) Scientific name: Pachyurus bonariensis Steindachner, 1879 The La Plata croaker (Pachyurus bonariensis) is a freshwater fish of the family Sciaenidae. Native range: South America, Uruguay and Paraguay River basins and lower parts of Paran? River. Species factsScientific namePachyurus bonariensisFamilySciaenidae (Drums or croakers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length22.6EnvironmentFreshwater; benthopelagicClimateSubtropicalDistributionSouth America: Uruguay and Paraguay River basins and lower parts of Paran? River.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: 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