Actinopteri (ray-finned fishes) > Anguilliformes
(Eels and morays) > Muraenidae
(Moray eels) > Muraeninae
Etymology: Gymnothorax: Greek, gymnos = naked + Greek, thorax, -akos = breast (Ref. 45335). More on authors: McCosker & Randall.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C - ; 30°N - 24°S
Indo-Pacific: East Africa (Ref. 33390) and the Gulf of Aden to the Tuamotu Islands, north to the Ryukyu Islands, south to Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 58.0 cm TL male/unsexed; (Ref. 1602)
Morphology | Morphometrics
Relatively uncommon in intertidal reefs. Found in shallow coastal reefs (Ref. 48635). Juveniles inhabit lagoons. Sometimes out during the day (Ref. 48635).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 26.3 - 29.3, mean 28.6 °C (based on 2566 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00048 (0.00026 - 0.00087), b=3.28 (3.13 - 3.43), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.9 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (46 of 100) .
Nutrients (Ref. 124155
): Calcium = 48.7 [28.6, 83.8] mg/100g ; Iron = 0.46 [0.26, 0.76] mg/100g ; Protein = 19.7 [17.5, 22.0] % ; Omega3 = 0.133 [0.062, 0.347] g/100g ; Selenium = 43.7 [24.7, 83.9] μg/100g ; VitaminA = 75.3 [21.5, 244.8] μg/100g ; Zinc = 1.05 [0.74, 1.45] mg/100g (wet weight);