Trachinops brauni

Bluelined hulafish
Trachinops brauni
Trachinops brauni, Rottnest Island, WA, Photo: Rick Stuart-Smith
Trachinops brauni
Trachinops brauni, adult, WA, Australia, Photo: Rick Stuart-Smith
Trachinops brauni
Trachinops brauni, adult, Margaret River, WA, Photo: Graham Edgar
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Trachinops brauni
Trachinops brauni
Trachinops brauni




Elongate filament projecting from the tail, which is longer and thinner than on others in the genus, and is also easily recognised by the electric blue stripe along each side. The species is often mixed with the Noarlunga hulafish in groups of 5-20 at the mouths of small caves and crevices.


Max Size: 8 cm

Sea Temperature Range: 17.8-22.8°C

Depth: 3-10 m

Habitat Generalization Index: 8.26

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: Common (23.6% 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: Large aggregations (117 per transect)

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

Edit by: GJ Edgar. 2008. Australian Marine Life. New Holland, Sydney