HomeFish encyclopediaRay-finned fishesPerch-like fishDrums or croakersShortfin weakfish Shortfin weakfish (Cynoscion parvipinnis) Scientific name: Cynoscion parvipinnis Ayres, 1861 The Shortfin weakfish (Cynoscion parvipinnis) is a marine fish of the family Sciaenidae. Native range: Eastern Pacific, southern California, USA to Mazatlan, Mexico and the Gulf of California. Rare north of Baja California, Mexico. BiologyInhabits shallow inshore sandy areas. Feeds mainly on small fishesSource: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCynoscion parvipinnisFamilySciaenidae (Drums or croakers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length69.0Common length40.0EnvironmentMarine; demersalClimateSubtropicalDistributionEastern Pacific: southern California, USA to Mazatlan, Mexico and the Gulf of California. Rare north of Baja California, Mexico.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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