Gymnothorax thyrsoideus (Richardson, 1845)
Greyface moray
Gymnothorax thyrsoideus
photo by Pyle, R.L.

 Family:  Muraenidae (Moray eels), subfamily: Muraeninae
 Max. size:  66 cm TL (male/unsexed)
 Environment:  reef-associated; depth range 0 - 30 m
 Distribution:  Indo-Pacific: Christmas Island to French Polynesia, north to the Ryukyu Islands and south to Tonga; throughout Micronesia.
 Diagnosis:  Vertebrae: 125-137. Vomerine teeth are biserial and diverging anteriorly with the posterior most 3 to 4 teeth forming a single row (Ref. 37816). Description: Characterized by whitish or pale yellow color; densely mottled with small brown spots; purplish grey color front half of head; white iris; body depth at gill opening17-22 in TL; origin of dorsal fin about midway between gill opening and mouth corner; anus well anterior to middle of body; preanal length about 2.5 in TL; conical teeth, none as canines, in two rows on side of upper jaw and front of lower jaw; median row of intermaxillary with two conical teeth (Ref. 90102).
 Biology:  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).
 IUCN Red List Status: Not Evaluated  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   

 Entered by: Sa-a, Pascualita - 18.08.93
 Modified by: Valdestamon, Roxanne Rei - 06.04.15
 Checked by: Froese, Rainer - 17.05.94

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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