Stethojulis trilineata

Labridae
Blue-ribbon Wrasse, Three-lined Wrasse, Three-ribbon Wrasse, Threeline Rainbowfish
  • Stethojulis trilineata, Male, Bali, Indonesia, Photo: Ian Shaw
    Stethojulis trilineata, Male, Bali, Indonesia, Photo: Ian Shaw
  • Stethojulis trilineata, Female, Samoa, Photo: Graham Edgar
    Stethojulis trilineata, Female, Samoa, Photo: Graham Edgar
Distribution
Temperate Australasia, Temperate northern Pacific, Tropical Indo-Pacific
Description
Continuation of 3 blue lines along length of body distinguishes the male from other Stethojulis species. Females similar to S. bandanensis, but have horizontal light stripes, and lack yellow on snout and distinct scales on underside.
Information
  • Max Size: 15 cm
  • Sea Temperature Range: 20.3-31.3°C
  • Depth: 0-20 m
  • Habitat: Coral Reef, Rocky Reef
  • Habitat Generalisation Index: 2.5
    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: Infrequent (4% 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: Few (2 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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