Heniochus chrysostomus

Pennant Bannerfish | Horned Bannerfish | Threeband Pennantfish
Heniochus chrysostomus
Heniochus chrysostomus, adult, Bali, Indonesia, Photo: Ian Shaw
Heniochus chrysostomus
Heniochus chrysostomus, French Polynesia, Photo: Antonia Cooper
Heniochus chrysostomus
Heniochus chrysostomus, juvenile, Coral Sea, Australia, Photo: Rick Stuart-Smith
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Heniochus chrysostomus
Heniochus chrysostomus
Heniochus chrysostomus


Temperate Australasia, Tropical Indo-Pacific


White with three brown bands, the first on head through eyes and on to ventral fins, and the last on rear of dorsal fin and on to tail fin. Triangular shape, and tallest dorsal spine with extended feather-like pennant.


Max Size: 18 cm

Sea Temperature Range: 22.3-31.2°C

Depth: 1-45m

Habitat Generalization Index: 18.21

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: Common (29.6% 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.