HomeFish encyclopediaRay-finned fishesEels and MoraysMoray eelsBlackedge moray Blackedge moray (Gymnothorax nigromarginatus) Scientific name: Gymnothorax nigromarginatus Girard, 1858 The Blackedge moray (Gymnothorax nigromarginatus) is a marine fish of the family Muraenidae. Native range: Western Atlantic, southern Florida to Texas and Yucatan in Mexico, but most common west of Mississippi River Delta. BiologyBrown, with small yellow or white spots on body and lower half of fins.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGymnothorax nigromarginatusFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length99.0EnvironmentMarine; reef-associated, usually 10 - 100 mClimateSubtropicalDistributionWestern Atlantic: southern Florida to Texas and Yucatan in Mexico, but most common west of Mississippi River Delta.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026