Pomacentrus tripunctatus

Threespot Damsel
Pomacentrus tripunctatus
Pomacentrus tripunctatus, adult, Photo: Ian Shaw


Tropical Indo-Pacific


Adult with black spot on upper tail base, rather than blue spot as on P. grammorhynchus, which also has an orange hue to tail. Juvenile with bright blue lines, large ocellus on rear dorsal fin and blue margin to black spot on tail base. Found in shallow brackish water.


Max Size: 8 cm

Sea Temperature Range: 24.7-30.9°C

Depth: 0-3m

Habitat Generalization Index: N/A

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: Infrequent (1.5% 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 (23 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.