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Gymnothorax thyrsoideus (Richardson, 1845)

Greyface moray
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Gymnothorax thyrsoideus   AquaMaps   Data sources: GBIF OBIS
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Image of Gymnothorax thyrsoideus (Greyface moray)
Gymnothorax thyrsoideus
Picture by Pyle, R.L.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

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

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-Pacific: Christmas Island to French Polynesia, north to the Ryukyu Islands and south to Tonga; throughout Micronesia.

Size / Weight / Age

Maturity: Lm ?  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)

Short description Identification keys | Morphology | Morphometrics

Vertebrae: 125 - 137. Vomerine teeth are biserial and diverging anteriorly with the posterior most 3 to 4 teeth forming a single row (Ref. 37816).

Biology     Glossary (e.g. epibenthic)

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 Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Simultaneous hermaphroditism not confirmed (Ref. 84746).

Main reference Upload your references | References | Coordinator | Collaborators

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

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: minor commercial
FAO - Publication: search | FishSource | Sea Around Us

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators
Ecology
Ecology
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Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproduction
Maturities
Fecundities
Spawnings
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Egg(s)
Egg developments
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Distribution
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BRUVS - Videos
Anatomy
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Physiology
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Visual pigment(s)
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Toxicities (LC50s)
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Genetics
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References

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | DORIS | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | 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):  PD50 = 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).
Price category (Ref. 80766):   Medium.
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);