Chaetodon decussatus

Indian Vagabond Butterflyfish
Chaetodon decussatus
Chaetodon decussatus, adult, Bali, Indonesia, Photo: Ian Shaw
Chaetodon decussatus
Chaetodon decussatus, adult, Tulamben, Bali
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Chaetodon decussatus
Chaetodon decussatus


Tropical Indo-Pacific


White with oblique bars on body with wide black bar on rear of dorsal fin, caudal peduncle and extending onto anal fin. Distinguished from Similar C. vagabundus by location (Indo-West Pacific) and which has narrower black stripe followed by yellow on the dorsal and anal fin.


Max Size: 20 cm

Sea Temperature Range: 27.6-30.5°C

Depth: 1-30 m

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: Least Concern

Occurrence: Frequent (14.7% 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 (2 per transect)

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