Actinopterygii (ray-finned fishes) > Anguilliformes
(Eels and morays) > Muraenidae
(Moray eels) > Muraeninae
Etymology: Gymnothorax: Greek, gymnos = naked + Greek, thorax, -akos = breast (Ref. 45335). More on author: Poey.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 100 - 310 m (Ref. 57911), usually 179 - 254 m (Ref. 13608). Deep-water; 36°N - 40°S, 100°W - 35°W (Ref. 57911)
Western Atlantic: Gulf of Mexico to Rio Grande do Sul. North Carolina, Florida, USA, Antilles, Colombia to southern Brazil (Ref. 26938). Also found in Argentina (Ref. 86327)
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 110 cm TL male/unsexed; (Ref. 57911)
Morphology | Morphometrics
Body light brown to chestnut brown in color, head paler; posterior half of tail nearly black, spotted with white roundish markings larger than eye; white and black bands on dorsal fin; corner of mouth and gill openings not black (Ref. 13608).
Lives together in fine sediments of the upper continental slope.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Uyeno, T., K. Matsuura and E. Fujii (eds.), 1983. Fishes trawled off Suriname and French Guiana. Japan Marine Fishery Resource Research Center, Tokyo, Japan. 519 p. (Ref. 13608)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 13.3 - 21.8, mean 16.5 (based on 50 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00038 (0.00024 - 0.00061), b=3.23 (3.10 - 3.36), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.1 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years ().
Vulnerability (Ref. 59153
): High to very high vulnerability (66 of 100) .