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 author: Bleeker.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range - 20 m (Ref. 86942), usually - m (Ref. ). Tropical; 0°C -
Indo-West Pacific: Oman and India east to Philippines; north to Japan, south to Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 80.0 cm TL male/unsexed; (Ref. 2334)
soft rays: 0;
Vertebrae: 127 - 135. Color pale yellowish; dark brown spots clustering to form larger ones in about 4 irregular rows along the body. Margin of fins white in juveniles; reduced to tip of tail in adults. Vertebrae 127-135.
Not common. Found in shallow reefs, including tidepools (Ref 90102).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Chen, H.-M., K.-T. Shao and C.T. Chen, 1994. A review of the muraenid eels (Family Muraenidae) from Taiwan with descriptions of twelve new records. Zool. Stud. 33(1):44-64. (Ref. 6934)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.7 - 29.3, mean 28.1 °C (based on 2036 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00032 (0.00021 - 0.00048), b=3.38 (3.26 - 3.50), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.7 ±0.52 se; based on food items.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): High vulnerability (57 of 100) .
Nutrients (Ref. 124155
): Calcium = 37.1 [21.8, 62.9] mg/100g ; Iron = 0.427 [0.249, 0.700] mg/100g ; Protein = 19.6 [17.4, 21.9] % ; Omega3 = 0.12 [0.06, 0.31] g/100g ; Selenium = 47.7 [27.6, 88.6] μg/100g ; VitaminA = 59.2 [16.9, 189.1] μg/100g ; Zinc = 1.01 [0.71, 1.40] mg/100g (wet weight);