Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Labridae
(Wrasses) > Corinae
Etymology: Cheilio: Greek, chanos, -eos, ous, and chasma, -atos = abyss, mouth opened, inmensity + Latin, muraena = morey eel (Ref. 45335).
Environment / Climate / Range
Marine; reef-associated; depth range 1 - 30 m (Ref. 1602), usually 2 - 30 m (Ref. 27115). Tropical; 24°C - 27°C (Ref. 27115); 30°N - 30°S
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm SL male/unsexed; (Ref. 9823); common length : 35.0 cm TL male/unsexed; (Ref. 5450)
soft rays: 11 - 12. Young individuals are usually a mottled brown or green, sometimes with a broad lateral stripe (Ref. 1602). Rare individuals may be uniformly yellow (Ref. 1602). Large males may develop a bright yellow, orange, black, white, or multicolored patch on their sides behind their pectoral fins (Ref. 1602).
Indo-Pacific: Red Sea and East Africa to the Hawaiian and Easter islands, north to southern Japan, south to Lord Howe Island.
Inhabit seagrass beds and algal-covered flats, occasionally in lagoon and seaward reefs to a depth of at least 30 m (Ref. 1602, 41878, 48636). Benthopelagic (Ref. 58302). Usually solitary. Juveniles secretive in seagrasses or attached Sargassum; adults usually in small loose aggregations, but occasionally form large schools to spawn (Ref. 48636). Feed mainly on crustaceans, mollusks, sea urchins (Ref. 37816) and other hard-shelled prey. Oviparous, distinct pairing during breeding (Ref. 205).
Randall, J.E., G.R. Allen and R.C. Steene, 1990. Fishes of the Great Barrier Reef and Coral Sea. University of Hawaii Press, Honolulu, Hawaii. 506 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
Fisheries: minor commercial; aquarium: commercial
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00162 - 0.00892), b=3.10 (2.89 - 3.31), based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic Level (Ref. 69278
): 4.0 ±0.7 se; Based on diet studies.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): High vulnerability (60 of 100) .