HomeFish encyclopediaRay-finned fishesPerch-like fishWrassesU-spot wrasse U-spot wrasse (Halichoeres stigmaticus) Scientific name: Halichoeres stigmaticus Randall & Smith, 1982 The U-spot wrasse (Halichoeres stigmaticus) is a marine fish of the family Labridae. Native range: Western Indian Ocean, known only from the Persian Gulf and the Gulf of Oman. BiologyDorsal spines (total): 9; Dorsal soft rays (total): 12; Anal spines: 3; Anal soft rays: 11 - 13. Caudal fin slightly to moderately rounded; females whitish with two broad brownish red to yellowish brown stripes, one dorsally on body and the other lateral, ending in a black spot at base of caudal fin; males pale blue and yellow on dorsal half of body (above lateral line, scale centers yellow, edges blue; colors reversed below the lateral line), gradually shading to whitish ventrally; a large U-shaped black mark within the pale blue area on upper side of tip of pectoral fin; a bright blue and yellow spot anteriorly on dorsal fin (first interspinous membrane mainly blue, second mainly yellow).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHalichoeres stigmaticusFamilyLabridae (Wrasses)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length12.8Depth range3–25 m (10–82 ft)EnvironmentMarine; reef-associated; depth range 3 - 25 mClimateTropicalDistributionWestern Indian Ocean: known only from the Persian Gulf and the Gulf of Oman.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026