Canthigaster callisterna

Clown toby | Clown Toado
Canthigaster callisterna
Canthigaster callisterna, Jervis Bay, NSW, Photo: Andrew Green
Canthigaster callisterna
Canthigaster callisterna, adult, Photo: Rick Stuart-Smith
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Canthigaster callisterna
Canthigaster callisterna


Temperate Australasia, Tropical Indo-Pacific


Black-edged white stripe from lower snout to tail, with blue spots and lines on back and underside. Black upper and lower margins to tail.


Max Size: 23 cm

Sea Temperature Range: 15.3-25.6°C

Depth: 1-250m

Habitat Generalization Index: 2.02

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: Not Evaluated

Occurrence: Frequent (16.6% 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: Solitary (1 per transect)

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

Edit by: extract from RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland