Dotted Butterflyfish, Decorated Butteflyfish, Dotted Butterflyfish, Golden Butterflyfish
Chaetodon semeion, Adult, Raja Ampat, Indonesia, Photo: Andrew Green
Yellow with a trailing dorsal filament, transparent tail and a blue patch on head above eye. Horizontal lines of small black spots on body, black blotch on face over eye and black markings on base of rear of dorsal and anal fins.
Max Size: 26 cm
Sea Temperature Range: 25.3-31.3°C
Habitat: Coral Reef
Habitat Generalisation Index: 3.6
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: Least Concern
Occurrence: Infrequent (9% 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