HomeFish encyclopediaRay-finned fishesPerch-like fishDrums or croakersSquaretail kob Squaretail kob (Argyrosomus thorpei) Scientific name: Argyrosomus thorpei Smith, 1977 The Squaretail kob (Argyrosomus thorpei) is a marine fish of the family Sciaenidae. Native range: Western Indian Ocean, Mozambique to Port Elizabeth, South Africa; also from the west coast of Madagascar. BiologyFound in coastal waters. Juveniles are found on sand or mud substrate and the adults predominantly on reef. Spawns in the winter. An important food fish. Sold fresh in markets.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameArgyrosomus thorpeiFamilySciaenidae (Drums or croakers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length71.0Common length40.0EnvironmentMarine; demersalClimateSubtropicalDistributionWestern Indian Ocean: Mozambique to Port Elizabeth, South Africa; also from the west coast of Madagascar.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial; gamefish: yesResilienceMedium, 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