Heniochus diphreutes

Schooling bannerfish
Heniochus diphreutes
Heniochus diphreutes, Photo: Rick Stuart-Smith


Temperate Australasia, Tropical Indo-Pacific


Black and white banded with rear of dorsal fin and tail yellow. Long, white trailing banner from dorsal fin. Slightly shorter snout than H. acuminatus (Longfin Bannerfish) and shorter anal fin, with black rear margin not extending as close to the lower corner of tail.


Max Size: 21 cm

Sea Temperature Range: 15.9-31.4°C

Depth: 5-210m

Habitat Generalization Index: 0.3

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 (2.0% 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: Several (10 per transect)

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