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 1 - 45 m (Ref. 11441), usually ? - 5 m. Tropical
Indo-Pacific: South Africa and Oman to the Hawaiian and Society islands, north to the Ryukyu and Ogasawara islands, south to northern Australia and the Loyalty Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 50.5 cm TL male/unsexed; (Ref. 2334)
soft rays: 0;
Vertebrae: 121 - 133. Body light brown, with dendritic pattern. Corner of mouth with a dark brown spot, preceded on lower lip by a large white blotch (often followed by another above and behind corner of mouth); upper and lower jaw pores usually in prominent white spots. Vertebrae 121-133.
Occurs in shallow coastal reef flats, usually found in less than 5 m water depth, but ranges to deep water rubble reefs (Ref. 48635). Benthic (Ref. 58302).
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. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00055 (0.00037 - 0.00082), b=3.23 (3.11 - 3.35), in cm total length, based on LWR estimates for this species & 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 vulnerability (41 of 100) .