Dascyllus trimaculatus

Pomacentridae
Three-spot Damsel, Domino Damselfish, Threespot Damsel, Threespot Humbug, Whitespot Humbug
  • Dascyllus trimaculatus, Adult, NSW, Australia, Photo: Ian Shaw
    Dascyllus trimaculatus, Adult, NSW, Australia, Photo: Ian Shaw
  • Dascyllus trimaculatus, Juvenile, NSW, Australia, Photo: Ian Shaw
    Dascyllus trimaculatus, Juvenile, NSW, Australia, Photo: Ian Shaw
  • Dascyllus trimaculatus, Naigani Is, Fiji, Photo: Andrew Green
    Dascyllus trimaculatus, Naigani Is, Fiji, Photo: Andrew Green
  • Dascyllus trimaculatus, Photo: Rick Stuart-Smith
    Dascyllus trimaculatus, Photo: Rick Stuart-Smith
Distribution
Tropical Indo-Pacific
Description
Black to grey with white patch on central upper body that fades with age. Adults feed in the water column, while juveniles have 2nd white patch above eye and are often associated with anemones.
Information
  • Max Size: 11 cm
  • Sea Temperature Range: 19.8-31.3°C
  • Depth: 1-55m
  • Habitat: Coral Reef, Rocky Reef
  • Habitat Generalisation Index: 20.5
    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
  • Threats: Habitat degradation
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Common (23% 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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