HomeFish encyclopediaRay-finned fishesPerch-like fishGruntsBigspine grunt Bigspine grunt (Pomadasys empherus) Scientific name: Pomadasys empherus Bussing, 1993 The Bigspine grunt (Pomadasys empherus) is a freshwater fish of the family Haemulidae. Native range: Eastern Central Pacific, Costa Rica. BiologyA rare species that has been collected in estuaries; may enter fresh water.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePomadasys empherusFamilyHaemulidae (Grunts)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length21.0EnvironmentMarine; freshwater; brackish; benthopelagicClimateTropicalDistributionEastern Central Pacific: Costa Rica.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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