Scarus rivulatus

Scaridae
Surf Parrotfish
  • Scarus rivulatus, Male, WA, Australia, Photo: Rick Stuart-Smith
    Scarus rivulatus, Male, WA, Australia, Photo: Rick Stuart-Smith
  • Scarus rivulatus, Juvenile, QLD, Australia, Photo: Rick Stuart-Smith
    Scarus rivulatus, Juvenile, QLD, Australia, Photo: Rick Stuart-Smith
  • Scarus rivulatus, Female, WA, Australia, Photo: Rick Stuart-Smith
    Scarus rivulatus, Female, WA, Australia, Photo: Rick Stuart-Smith
  • Scarus rivulatus, Male, WA, Australia, Photo: Rick Stuart-Smith
    Scarus rivulatus, Male, WA, Australia, Photo: Rick Stuart-Smith
  • Scarus rivulatus, Female, WA, Australia, Photo: Rick Stuart-Smith
    Scarus rivulatus, Female, WA, Australia, Photo: Rick Stuart-Smith
  • Scarus rivulatus, Female, Lord Howe Is, NSW, Photo: Andrew Green
    Scarus rivulatus, Female, Lord Howe Is, NSW, Photo: Andrew Green
  • Scarus rivulatus, Female, QLD, Australia, Photo: Rick Stuart-Smith
    Scarus rivulatus, Female, QLD, Australia, Photo: Rick Stuart-Smith
  • Scarus rivulatus, QLD, Australia, Photo: Rick Stuart-Smith
    Scarus rivulatus, QLD, Australia, Photo: Rick Stuart-Smith
  • Scarus rivulatus, Lord Howe Is, NSW, Photo: Andrew Green
    Scarus rivulatus, Lord Howe Is, NSW, Photo: Andrew Green
Distribution
Temperate Australasia, Tropical Indo-Pacific
Description
Rounded body shape, orange patch on operculum, purple streak near edge of yellow pectoral fin, and flat tail. Females often in large schools and similar to S. globiceps and S. chameleon, best confirmed by presence of a male.
Information
  • Max Size: 40 cm
  • Sea Temperature Range: 19.1-31.1°C
  • Depth: 1-30 m
  • Habitat: Coral Reef
  • Habitat Generalisation Index: 14.7
    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: Common (29% 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 (12 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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