Chaetodon assarius, Adult. Photo: Rick Stuart-Smith
Distribution
Localised, Temperate Australasia
Description
Pale beige, dark band through eye and 5 vertical rows of dark spots on body, ocellus on rear dorsal fin, rear margin of dorsal and anal fins white. Restricted range in central Western Australia.
Information
Max Size: 13 cm
Sea Temperature Range: 17.8-28.9°C
Depth: 1-40m
Habitat: Coral Reef, Rocky Reef
Habitat Generalisation Index: 0.9
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
Rarity
Threats: Exploitation, Habitat degradation
IUCN Threat Status: Least Concern
Occurrence: Common (30% 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
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Chaetodon assarius, Adult. Photo: Rick Stuart-Smith
