Dascyllus trimaculatus
Three-spot damsel | Domino Damselfish | Threespot Damsel | Threespot Humbug | Whitespot Humbug
Dascyllus trimaculatus, adult, NSW, Australia, Photo: Ian Shaw
Dascyllus trimaculatus, juvenile, NSW, Australia, Photo: Ian Shaw
Dascyllus trimaculatus, Naigani Is, Fiji, Photo: Andrew Green
Dascyllus trimaculatus, Photo: Rick Stuart-Smith
Similar Species
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 Generalization Index: 20.46
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.
Conservation and Rarity
IUCN Status: Not Evaluated
Occurrence: Common (22.8% 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.