HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesKei goby Kei goby (Oligolepis keiensis) Scientific name: Oligolepis keiensis Smith, 1938 The Kei goby (Oligolepis keiensis) is a brackish-water fish of the family Gobiidae. Native range: Western Indian Ocean, Inhaca, Mozambique to the Fish River mouth, South Africa; including Seychelles and Madagascar. BiologyDorsal spines (total): 7; Dorsal soft rays (total): 11-12; Anal spines: 1; Anal soft rays: 12. Body grey or dark brown with brown oblique streak; upper caudal base with a black spot; adults with blackish pelvic fins.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOligolepis keiensisFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length7.0EnvironmentMarine; brackish; demersalClimateTropicalDistributionWestern Indian Ocean: Inhaca, Mozambique to the Fish River mouth, South Africa; including Seychelles and Madagascar.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceHigh, 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