Acanthurus albipectoralis

Acanthuridae
Whitefin Surgeonfish
  • Acanthurus albipectoralis, Lihou Reef, Coral Sea, Photo: Ben Jones
    Acanthurus albipectoralis, Lihou Reef, Coral Sea, Photo: Ben Jones
  • Acanthurus albipectoralis, Saumarez Reef, Coral Sea, Photo: Graham Edgar
    Acanthurus albipectoralis, Saumarez Reef, Coral Sea, Photo: Graham Edgar
Distribution
Tropical Indo-Pacific
Description
Dark body, light outer half of pectoral fin, crescent-shaped tail, dark spine on tail base, dark eye, and occasionally with white bar across inner tail. Distinguished from similar A. mata (Pale Surgeonfish), A. thompsoni (Night Surgeonfish) and some Naso species (Unicornfishes) by white outer edge of the pectoral fin and lacking white tail and yellow around eye.
Information
  • Max Size: 33 cm
  • Sea Temperature Range: 16.2-29.4°C
  • Depth: 5-20m
  • Habitat: Coral Reef, Rocky Reef
  • Habitat Generalisation Index: 7
    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: Frequent (11% 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 (9 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: Joe Shields
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