Apolemichthys trimaculatus

Threespot angelfish
Apolemichthys trimaculatus
Apolemichthys trimaculatus, adult, Bali, Indonesia, Photo: Ian Shaw
Apolemichthys trimaculatus
Apolemichthys trimaculatus, adult, Torres Strait, Qld, Photo: Andrew Green
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Apolemichthys trimaculatus
Apolemichthys trimaculatus


Tropical Indo-Pacific


Yellow body with dark scale margins, anal fin pale with black margin, blue lips, black spot on forehead, dark earspot and a blue tinged spine on lower cheek. Juveniles with a second black spot below rear dorsal fin. Centropyge flavissima (Lemonpeel Angelfish) is smaller and has blue edge on gill cover, and blue margin on anal fin. Length to 26 cm.


Max Size: 26 cm

Sea Temperature Range: 25.4-31.6°C

Depth: 3-60m

Habitat Generalization Index: 3.55

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: Least Concern

Occurrence: Infrequent (8.6% 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: Few (2 per transect)

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

Edit by: Joe Shields