Thalassoma bifasciatum

Labridae
Bluehead
  • Thalassoma bifasciatum, Bocas del Toro, Panama, Photo: Rick Stuart-Smith
    Thalassoma bifasciatum, Bocas del Toro, Panama, Photo: Rick Stuart-Smith
  • Thalassoma bifasciatum, Juvenile, Belize, Photo: Rick Stuart-Smith
    Thalassoma bifasciatum, Juvenile, Belize, Photo: Rick Stuart-Smith
  • Thalassoma bifasciatum, Belize, Photo: Rick Stuart-Smith
    Thalassoma bifasciatum, Belize, Photo: Rick Stuart-Smith
  • Thalassoma bifasciatum, Juvenile, Turks & Caicos, Photo: Rick Stuart-Smith
    Thalassoma bifasciatum, Juvenile, Turks & Caicos, Photo: Rick Stuart-Smith
  • Thalassoma bifasciatum, Juvenile, Belize, Photo: Rick Stuart-Smith
    Thalassoma bifasciatum, Juvenile, Belize, Photo: Rick Stuart-Smith
  • Thalassoma bifasciatum, Juvenile, Bocas del Toro, Panama, Photo: Rick Stuart-Smith
    Thalassoma bifasciatum, Juvenile, Bocas del Toro, Panama, Photo: Rick Stuart-Smith
  • Thalassoma bifasciatum, Bocas del Toro, Panama, Photo: Rick Stuart-Smith
    Thalassoma bifasciatum, Bocas del Toro, Panama, Photo: Rick Stuart-Smith
  • Thalassoma bifasciatum, Bocas del Toro, Panama, Photo: Rick Stuart-Smith
    Thalassoma bifasciatum, Bocas del Toro, Panama, Photo: Rick Stuart-Smith
  • Thalassoma bifasciatum, Male, Florida Keys, USA, Photo: Graham Edgar
    Thalassoma bifasciatum, Male, Florida Keys, USA, Photo: Graham Edgar
  • Thalassoma bifasciatum, San Blas, Panama, Photo: Graham Edgar
    Thalassoma bifasciatum, San Blas, Panama, Photo: Graham Edgar
Distribution
Description
Information
  • Max Size: 25 cm
  • Sea Temperature Range: 22.3-30.9°C
  • Habitat Generalisation Index: 23.4
    Also referred to as the SGI (Species generalisation index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here
Rarity
  • IUCN Threat Status: Least Concern
  • Occurrence: Widespread (59% of sites)
    Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
  • Abundance: Many (98 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
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