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 / Climate / Range
Marine; reef-associated; depth range 0 - 10 m (Ref. 1602). Tropical; 30°N - 28°S
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm TL male/unsexed; (Ref. 4392)
soft rays: 10 - 12. The primary phase of this wrasse is almost indistinguishable from that of T. purpureum. But head of male T. trilobatum plain brown to orange or shaded with blue. Female most difficult and has a more spotted and shorter head. It lacks the 'V' on the snout that shows clearly on the T. purpureum (Ref. 48636). Initial phase with a diagonal dark red line below front of eye (Ref 9823).
Indo-Pacific: East Africa to the Pitcairn, north to the Ryukyu Islands, south to Tonga and Rapa.
Found solitary or in groups (Ref. 90102) in shallow exposed reef flats, usually with rock-base and mixed coral and algae (Ref. 48636, 58302). Also occurs in surge-swept reef flats, reef margins, and clear rocky shorelines, but may venture to deeper waters up to 10 m (Ref. 3921). Benthopelagic (Ref. 58302). Feeds on crustaceans (especially crabs), mollusks, and ophiuroids (brittle stars) (Ref. 3921).
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. 90363)
CITES (Ref. 94142)
Threat to humans
Fisheries: minor commercial; aquarium: commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00450 - 0.02223), b=3.07 (2.89 - 3.25), based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.5 se; Based on diet studies.
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Moderate vulnerability (35 of 100) .