Canthigaster axiologus

Crowned toby | Pacific Crowned Toby
Canthigaster axiologus
Canthigaster axiologus, adult, Photo: Rick Stuart-Smith

Distribution

Tropical Indo-Pacific


Description

Three triangular black saddles over back, plus 4th over eyes. Black saddles have broken yellow edges and don\'t extend as far onto the underside as on C. valentini (blacksaddle toby) which also has darker spots between saddles. Previously assumed same as C. coronata from Hawaii.


Information

Max Size: 11 cm

Sea Temperature Range: N/A

Depth: 10-80m

Habitat Generalization Index: 0.27

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: Infrequent (2.2% 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: extract from RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland