HomeFish encyclopediaRay-finned fishesClingfishesClingfishes and singleslitsRed clingfish Red clingfish (Acyrtus rubiginosus) Scientific name: Acyrtus rubiginosus Poey, 1868 The Red clingfish (Acyrtus rubiginosus) is a marine fish of the family Gobiesocidae. Native range: Western Atlantic, Bahamas and the Greater and Lesser Antilles. Grand Cayman, Isla de Providencia, western Caribbean from Mexico to Honduras. BiologyUpper lip widest at middle; no papillae in central part of disk.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAcyrtus rubiginosusFamilyGobiesocidae (Clingfishes and singleslits)OrderGobiesociformes (Clingfishes)ClassActinopterygii (Ray-finned fishes)Maximum length3.5Depth range0–4 m (0–13 ft)EnvironmentMarine; demersal; depth range 0 - 4 mClimateTropicalDistributionWestern Atlantic: Bahamas and the Greater and Lesser Antilles. Grand Cayman, Isla de Providencia, western Caribbean from Mexico to Honduras.Conservation status (IUCN)Not EvaluatedThreat 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