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); nigrofasciatum: Name from Latin, referring to the presence of black bars on the body. More on author: Randall.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 0 - 15 m (Ref. 57555). Tropical; 7°S - 32°S, 142°E - 173°W
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 20.0 cm SL male/unsexed; (Ref. 57555)
Morphology | Morphometrics
soft rays: 11;
Vertebrae: 25. Diagnosis: Dorsal rays VIII,13. Anal rays III,11, the first spine, when detectable is very slender and short. Pectoral rays 15-16 (usually 15). Lateral line scales 26-27. Head naked, except for a small patch of scales dorsally on opercle. Gill rakers 20-23. Body depth 5.9-3.6 in SL; head length (HL) 3.1-3.4 in SL; snout length 8.4-9.8 in SL; caudal peduncle depth 6.2-6.65 in SL; pectoral fins 4.0-4.3 in SL; pelvic fins 6.3-6.9 in SL. The caudal fin is truncate in young individuals, becoming strongly lunate with filamentous lobes in adult males. The initial phase is white with postorbital head and anterior body above pectoral-fin base black with an oblique yellow band above dorsal edge of opercle, a black bar over last 4 or 5 dorsal spines continuing ventrally across body, its posterior edge vertical, and a broader black bar over last 9 soft rays of dorsal fin, across the body, and posterior anal fin; a black spot on first 2 membranes of dorsal fin; the terminal males with yellow partly replacing the white, a salmon pink patch on chin, and blue ventrally on head and chest (Ref. 57555).
Found solitary or in groups, most commonly on outer reef areas, and also found in coastal reefs, lagoons and tide pools (Ref. 57555, 90102).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, distinct pairing during breeding (Ref. 205).
Randall, J.E., 2003. Thalassoma nigrofasciatum, a new species of labrid fish from the south-west Pacific. Aqua J. Ichthyol. Aquat. Biol. 7(1):1-8. (Ref. 57555)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 24.6 - 28.5, mean 26.6 (based on 405 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00440 - 0.02172), b=3.04 (2.87 - 3.21), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.4 se; Based on size and trophs of closest relatives
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) .