HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsArgentine seabass Argentine seabass (Acanthistius brasilianus) Scientific name: Acanthistius brasilianus Cuvier, 1828 The Argentine seabass (Acanthistius brasilianus) is a brackish-water fish of the family Serranidae. Native range: Southwest Atlantic, Brazil, Argentina, and Uruguay. BiologyDorsal spines (total): 13; Dorsal soft rays (total): 15; Anal spines: 3; Anal soft rays: 8Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAcanthistius brasilianusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length60.0Depth range30 m (98 ft)EnvironmentMarine; brackish; benthopelagic; depth range 30 - ? mClimateSubtropicalDistributionSouthwest Atlantic: Brazil, Argentina, and Uruguay.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=2-4) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026