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Gymnothorax thyrsoideus, Greyface moray
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Greyface moray
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Gymnothorax thyrsoideus
Picture by
Pyle, R.L.
Teleostei (teleosts) >
Anguilliformes
(Eels and morays) >
Muraenidae
(Moray eels) > Muraeninae
Etymology:
Gymnothorax:
Greek, gymnos = naked + Greek, thorax, -akos = breast (Ref.
45335
)
.
More on author:
Richardson
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; reef-associated; depth range 0 - 30 m (Ref.
86942
), usually 0 - 4 m (Ref.
90102
). Tropical; 36°N - 33°S, 70°E - 130°W
Indo-Pacific: Christmas Island to French Polynesia, north to the Ryukyu Islands and south to Tonga; throughout Micronesia.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 73.2 cm TL male/unsexed; (Ref.
121652
); common length : 40.0 cm TL male/unsexed; (Ref.
2334
); max. published weight: 568.30 g (Ref.
121652
)
Vertebrae
: 125 - 137. Vomerine teeth are biserial and diverging anteriorly with the posterior most 3 to 4 teeth forming a single row (Ref.
37816
).
Fairly common inhabitant of reef flats where it is usually encountered in shallow tidal pools. Feeds on crustaceans, small fishes and octopi (Ref.
89972
). Often in shipwrecks; usually in pairs or small aggregations, and shares habitat with other morays (Ref.
48635
). Also common in sheltered reefs (Ref 90102).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Simultaneous hermaphroditism not confirmed (Ref.
84746
).
Böhlke, E.B., J.E. McCosker and D.G. Smith
, 1999. Muraenidae. p. 1643-1657. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 3. Batoid fishes, chimaeras and bony fishes part 1 (Elopidae to Linophrynidae). FAO, Rome. (Ref.
12904
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
18 August 2011
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 24.9 - 29.3, mean 28.6 °C (based on 2274 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00033 (0.00022 - 0.00050), b=3.30 (3.18 - 3.42), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.0 ±0.65 se; based on food items.
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Moderate to high vulnerability (49 of 100).
Nutrients (Ref.
124155
): Calcium = 34.4 [18.6, 62.4] mg/100g; Iron = 0.455 [0.272, 0.970] mg/100g; Protein = 18.8 [16.6, 21.4] %; Omega3 = 0.104 [0.048, 0.293] g/100g; Selenium = 37.1 [20.6, 74.2] μg/100g; VitaminA = 69.2 [20.9, 212.1] μg/100g; Zinc = 0.956 [0.678, 1.321] mg/100g (wet weight);
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