HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesPrison goby Prison goby (Caffrogobius gilchristi) Scientific name: Caffrogobius gilchristi Boulenger, 1898 The Prison goby (Caffrogobius gilchristi) is a brackish-water fish of the family Gobiidae. Native range: Western Indian Ocean and Southeast Atlantic, Mozambique Island to Table Bay, South Africa. BiologyEpibenthic, intertidal in pools, sometimes in mud.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCaffrogobius gilchristiFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length15.0EnvironmentMarine; brackish; demersalClimateSubtropicalDistributionWestern Indian Ocean and Southeast Atlantic: Mozambique Island to Table Bay, South Africa.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, 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