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Gymnothorax thyrsoideus (Richardson, 1845)
GREYFACE MORAY
Life   Vertebrata   Fish   Muraenidae   Gymnothorax

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Following modified from Taiwan Biodiversity National Information Network
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Kingdom Animalia  
 Phylum Chordata  
 Class Actinopterygii  
 Order Anguilliformes  
 Family Muraenidae  
 Genus Gymnothorax  
  Gymnothorax thyrsoideus    (Richardson, 1845) 
Provider: Kwang-Tsao Shao 
hierarchy tree    download xml    download txt    Chinese Page    
Synonyms: Gymnothorax thrysoideus Gymnothorax thyrsoidea Gymnothorax thyrsoides Muraena prosopeion Muraena thrysoidea Siderea prosopeion Siderea thrysoidea Siderea thyrsoidea Siderea thysoidea   details
Citation: 臺灣魚類誌(沈等, 1993) A review of muraenid eels (Family Muraenidae) from Taiwan with descriptions of twelve new records. Zoological studies 33(1):44-64(Chen, Shao & Chen, 1994)
Name Code: 380776
   Marine     
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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Gymnothorax&speciesname=thyrsoideus ---> http://www.fishbase.org/summary/Gymnothorax-thyrsoideus.html
http://www.fishbase.org/summary/Gymnothorax-thyrsoideus.html ---> https://www.fishbase.se/summary/Gymnothorax-thyrsoideus.html

Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Gymnothorax thyrsoideus (Richardson , 1845)

Greyface moray Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Gymnothorax thyrsoideus   AquaMaps   Data sources: GBIF OBIS
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Pictures | Videos |     Google image Image of Gymnothorax thyrsoideus (Greyface moray) Gymnothorax thyrsoideus
Picture by Pyle, R.L.

Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (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: 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: L m   ?   range ? - ? cm
Max length : 66.0 cm TL male/unsexed; (Ref. 90102 ); common length : 40.0 cm TL male/unsexed; (Ref. 2334 )

Short description 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 Maturity | Reproduction | Spawning | Eggs | Fecundity | 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. 120744 )

  Least Concern (LC)  ; Date assessed: 18 August 2011

CITES (Ref. 118484 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless




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Estimates based on models

Preferred temperature (Ref. 115969 ): 24.9 - 29.3, mean 28.6 (based on 2274 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00095 (0.00047 - 0.00196), b=3.09 (2.92 - 3.26), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  4.0   ±0.65 se; Based on food items. Resilience (Ref. 120179 ):  Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.). Vulnerability (Ref. 59153 ):  Moderate to high vulnerability (52 of 100) .

Entered by Sa-a, Pascualita Modified by Valdestamon, Roxanne Rei Fish Forum
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