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: Lacepède.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 1 - 40 m (Ref. 30573). Tropical
Western Indian Ocean: throughout the area, including the Red Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 65.0 cm TL male/unsexed; (Ref. 9710)
Morphology | Morphometrics
Head brownish with conspicuous lines of black dots (Ref. 3257). Body lilac with brown marbling (Ref. 3257).
Found in shallow coastal waters, on coral and rocky reefs (Ref. 30573). Simultaneous hermaphroditism is confirmed for this species (Ref. 103751).
Simultaneous hermaphroditism is confirmed using good diagnostic criteria (Ref. 103751).
Böhlke, E.B. and J.E. Randall, 1999. Gymnothorax castlei, a new species of Indo-Pacific moray eel (Anguilliformes: Muraenidae). Raffles Bull. Zool. 47(2):549-554. (Ref. 35991)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.6 - 29.3, mean 27.3 °C (based on 182 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
): 4.0 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 8,000-12,000).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (52 of 100) .