Dascyllus aruanus

Humbug damsel | Common Humbug | Humbug Dascyllus | Three-stripe Damsel | White-tailed Footballer | White-tailed Humbug | Zebra Humbug
Dascyllus aruanus
Dascyllus aruanus, WA, Australia, Photo: Rick Stuart-Smith
Dascyllus aruanus
Dascyllus aruanus, adult, Sulawesi, Indonesia, Photo: Ian Shaw
Dascyllus aruanus
Dascyllus aruanus, Red Sea, Photo: Rick Stuart-Smith
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Dascyllus aruanus
Dascyllus aruanus
Dascyllus aruanus


Temperate Australasia, Tropical Indo-Pacific


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.


Max Size: 10 cm

Sea Temperature Range: 19.1-31.1°C

Depth: 0-20m

Habitat Generalization Index: 12.45

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: Frequent (17.7% 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.