Actinopterygii (ray-finned fishes) > Anguilliformes
(Eels and morays) > Muraenidae
(Moray eels) > Muraeninae
Etymology: Gymnothorax: Greek, gymnos = naked + Greek, thorax, -akos = breast (Ref. 45335).
Environment / Climate / Range
Marine; reef-associated; depth range 0 - 60 m (Ref. 9710), usually 0 - 35 m (Ref. 40849). Subtropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 70.0 cm TL male/unsexed; (Ref. 4450); common length : 40.0 cm TL male/unsexed; (Ref. 5217)
Morphology | Morphometrics
Dark brown with numerous yellow dots, smallest on head and largest toward end of tail where they are irregular and confluent (Ref. 13442). Stout moray with a short blunt snout. Tip of tail always pale, usually deep yellow in life. Posterior nostril in short tube (Ref. 26938).
Western Atlantic: Bermuda and southern Florida, USA to the Antilles (Ref. 26340) and southeast Brazil (Ref. 42064). Eastern Atlantic: St. Paul's Rocks (Ref. 13121), Cape Verde, Ascension and St. Helena islands (Ref. 4450). Also mid-Atlantic islands (Ref. 26938).
A benthic and solitary species (Ref. 26340) inhabiting coral reefs and rocky shorelines. Usually at depths of 60 m (Ref. 26938). One of the most common and easily recognized morays of the West Indian reefs, active during the day and sometimes hunting together with other predators (Ref. 42064). This species has been called Muraena miliaris (Ref. 26938).
Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. Common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Pub. (20):183 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
Fisheries: minor commercial; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00195 (0.00113 - 0.00335), b=3.08 (2.93 - 3.23), based on LWR estimates for species & Genus-BS (Ref. 93245
Trophic Level (Ref. 69278
): 3.9 ±0.63 se; Based on food items.
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Moderate vulnerability (42 of 100) .