HomeFish encyclopediaRay-finned fishesPerch-like fishWrassesSt. Helena wrasse St. Helena wrasse (Thalassoma sanctaehelenae) Scientific name: Thalassoma sanctaehelenae Valenciennes, 1839 The St. Helena wrasse (Thalassoma sanctaehelenae) is a marine fish of the family Labridae. Native range: Southeast Atlantic, St. Helena Island. Species factsScientific nameThalassoma sanctaehelenaeFamilyLabridae (Wrasses)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)EnvironmentMarine; reef-associatedClimateTropicalDistributionSoutheast Atlantic: St. Helena Island.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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