Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Labridae
Etymology: Gomphosus: Greek, gomphos = nail; also molar tooth.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 1 - 35 m (Ref. 90102), usually 2 - 30 m (Ref. 27115). Tropical; 24°C - 28°C (Ref. 27115); 30°N - 30°S, 43°E - 143°W
Indo-Pacific: Cocos-Keeling to the Hawaiian, Marquesas and Tuamoto islands, north to southern Japan, south to Rowley Shoals in the eastern Indian Ocean and Lord Howe and Rapa islands. Replaced by Gomphosus caeruleus in the Indian Ocean (Ref. 37816). Hybrid with Thalassoma lunare documented from Cassini Island, Western Australia and reported from the Great Barrier Reef; with Thalassoma duperrey, observed from Hawaii (Ref. 57557).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm SL male/unsexed; (Ref. 9823)
A solitary species (Ref. 90102) found in coral-rich areas of lagoon and seaward reefs to a depth of at least 30 m (Ref. 1602, 58302). Benthopelagic (Ref. 58302). Feeds mainly on small benthic crustaceans, sometimes on small fishes, brittle stars, and mollusks (Ref. 2334).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. (Ref. 2334)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Fisheries: minor commercial; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 24.5 - 29, mean 27.8 (based on 1030 cells).
Phylogenetic diversity index (Ref. 82805
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00483 - 0.01247), b=2.98 (2.84 - 3.12), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.7 ±0.0 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (44 of 100) .