HomeFish encyclopediaRay-finned fishesPerch-like fishDrums or croakersWhitefin weakfish Whitefin weakfish (Cynoscion albus) Scientific name: Cynoscion albus G?nther, 1864 The Whitefin weakfish (Cynoscion albus) is a brackish-water fish of the family Sciaenidae. Native range: Eastern Pacific, southern Mexico to Ecuador. BiologyInhabits coastal waters; juveniles entering estuaries, river mouths, and shallow bays. Feeds on shrimps, fishes and cephalopods.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCynoscion albusFamilySciaenidae (Drums or croakers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length130Common length50.0EnvironmentMarine; brackish; benthopelagicClimateTropicalDistributionEastern Pacific: southern Mexico to Ecuador.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: minor commercialResilienceLow, minimum population doubling time 4.5 - 14 years (K=0.172 (?); tm=5-9) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026