Thalassoma hardwicke

Labridae
Six-bar Wrasse, Six-banded Wrasse
  • Thalassoma hardwicke, Adult, Lord Howe Is, NSW, Photo: Andrew Green
    Thalassoma hardwicke, Adult, Lord Howe Is, NSW, Photo: Andrew Green
  • Thalassoma hardwicke, Juvenile, QLD, Australia, Photo: Rick Stuart-Smith
    Thalassoma hardwicke, Juvenile, QLD, Australia, Photo: Rick Stuart-Smith
  • Thalassoma hardwicke, Adult, QLD, Australia, Photo: Joe Shields
    Thalassoma hardwicke, Adult, QLD, Australia, Photo: Joe Shields
  • Thalassoma hardwicke, NSW, Australia, Photo: Ian Shaw
    Thalassoma hardwicke, NSW, Australia, Photo: Ian Shaw
Distribution
Tropical Indo-Pacific
Description
Six dark, dagger-like bars along the side, reducing in size towards the rear of the body. Juveniles with black spots on front and middle of dorsal fin.
Information
  • Max Size: 20 cm
  • Sea Temperature Range: 19.1-31.2°C
  • Depth: 0-15 m
  • Habitat: Coral Reef
  • Habitat Generalisation Index: 28.1
    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: Common (36% 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: Several (8 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland
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