Melichthys indicus

Indian triggerfish | Black Triggerfish | Blackfinned Triggerfish
Melichthys indicus
Melichthys indicus, Maldives, Photo: Rick Stuart-Smith
Melichthys indicus
Melichthys indicus, Aceh, Indonesia, Photo: Ian Shaw
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Melichthys indicus
Melichthys indicus


Tropical Indo-Pacific


Oval-shaped dark brown/black body with pale blue stripes along the base of the dorsal and anal fins, and faint blue oblique stripe on cheek. Differs from M. niger (Black Triggerfish) in having white trim around tail fin margin. Swims with dorsal and anal fins.


Max Size: 25 cm

Sea Temperature Range: 26.3-31°C

Depth: 1-30 m

Habitat Generalization Index: 13.28

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: Widespread (50.7% 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: Few (4 per transect)

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

Edit by: Joe Shields