Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Labridae
(Wrasses) > Corinae
Etymology: Thalassoma: Greek, thalassa = the sea + Greek, soma = body; the colour of the sea (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 1 - 30 m (Ref. 1602), usually 1 - 30 m (Ref. 27115). Subtropical; 24°C - 28°C (Ref. 27115); 30°N - 32°S
Indo-Pacific: Sri Lanka to Ducie Island, north to southern Japan and the Hawaiian Islands, south to southeastern Australia, Lord Howe Island, the Kermadec Islands, and Rapa. Replaced by Thalassoma grammaticum in the tropical eastern Pacific (Ref. 37816).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm TL male/unsexed; (Ref. 9710)
soft rays: 11. Body without longitudinal stripes. Initial phase body yellow with light vertical red lines. Terminal phase body abruptly blue to blue-green behind pink and green head. Reddish vertical lines on body. Pectoral fins yellow on basal half, blue to black distally (Ref 9823).
Occurs in groups (Ref. 90102) in clear outer lagoon and seaward reefs, over open sand and rubble as well as dense coral growth. Common is shallow exposed areas (Ref. 9710). Benthopelagic (Ref. 58302). Feeds mainly on shelled benthic invertebrates (crabs, shrimps, gastropods, bivalves, brittle stars, sea urchins), also on polychaete worms and fish eggs.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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
): 24.3 - 28.9, mean 27.5 (based on 1148 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00661 - 0.01737), b=3.04 (2.90 - 3.18), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.7 ±0.4 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
): Low to moderate vulnerability (35 of 100) .