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. Tropical; 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. 123251)
CITES (Ref. 123416)
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 - 0.00088), b=3.27 (3.12 - 3.42), 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);