Chaetodon ocellicaudus, Juvenile. Photo: Rick Stuart-Smith
Chaetodon ocellicaudus, Adult, Raja Ampat, Indonesia, Photo: Andrew Green
Black spot on tail base distinguishes it from C. melannotus (Blackback Butterflyfish), which also has oblique black lines and black patch on back, and a black saddle on tail base. Often misidentified as that species.
Max Size: 15 cm
Sea Temperature Range: 28.1-31.0°C
Habitat: Coral Reef
Habitat Generalisation Index: 2.2
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
Threats: Exploitation, Habitat degradation
IUCN Threat Status: Data Deficient
Occurrence: Infrequent (5% 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: RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland