HomeFish encyclopediaRay-finned fishesCusk eelsViviparous brotulasReef-cave brotula Reef-cave brotula (Grammonus claudei) Scientific name: Grammonus claudei Torre y Huerta, 1930 The Reef-cave brotula (Grammonus claudei) is a marine fish of the family Bythitidae. Native range: Western Atlantic, Bermuda, Florida (USA), and Bahamas to Cura?ao. Puerto Rico, eastern Antilles. BiologyUncommon species. Known only from caverns in coral reefs and rocky shores.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGrammonus claudeiFamilyBythitidae (Viviparous brotulas)OrderOphidiiformes (Cusk eels)ClassActinopterygii (Ray-finned fishes)Maximum length10.0Depth range6–70 m (20–230 ft)EnvironmentMarine; reef-associated; depth range 6 - 70 mClimateTropicalDistributionWestern Atlantic: Bermuda, Florida (USA), and Bahamas to Cura?ao. Puerto Rico, eastern Antilles.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceLow, minimum population doubling time 4.5 - 14 years (Assuming Fec SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026