Dascyllus aruanus

Pomacentridae
Humbug Damsel, Common Humbug, Humbug Dascyllus, Three-stripe Damsel, White-tailed Footballer, White-tailed Humbug, Zebra Humbug
  • Dascyllus aruanus, WA, Australia, Photo: Rick Stuart-Smith
    Dascyllus aruanus, WA, Australia, Photo: Rick Stuart-Smith
  • Dascyllus aruanus, Adult, Sulawesi, Indonesia, Photo: Ian Shaw
    Dascyllus aruanus, Adult, Sulawesi, Indonesia, Photo: Ian Shaw
  • Dascyllus aruanus, Red Sea, Photo: Rick Stuart-Smith
    Dascyllus aruanus, Red Sea, Photo: Rick Stuart-Smith
Distribution
Temperate Australasia, Tropical Indo-Pacific
Description
Black and white bars of near equal size and white tail. High body with a rounded head. Similar D. melanurus (Blacktail Humbug) has black tail, and Chrysiptera tricincta (Threeband Demoiselle) has white on pelvic fin. Lives in small aggregations above staghorn coral in lagoons.
Information
  • Max Size: 10 cm
  • Sea Temperature Range: 19.1-31.1°C
  • Depth: 0-20m
  • Habitat: Coral Reef
  • Habitat Generalisation Index: 12.4
    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
  • Threats: Exploitation, Habitat degradation
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Frequent (17% 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 (42 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
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