Ucla xenogrammus

Largemouth Threefin | Largemouth Triplefin | Longjaw Threefin | Longjaw Triplefin
Ucla xenogrammus
Ucla xenogrammus, adult, QLD, Australia, Photo: Joe Shields
Ucla xenogrammus
Ucla xenogrammus, juvenile, QLD, Australia, Photo: Joe Shields
Ucla xenogrammus
Ucla xenogrammus, Photo: Graham Edgar
Ucla xenogrammus
Ucla xenogrammus, QLD, Australia, Photo: Joe Shields
Ucla xenogrammus
Ucla xenogrammus, Coral Sea, QLD, Photo: Andrew Green
Ucla xenogrammus
Ucla xenogrammus, Great Barrier Reef, Cairns, QLD, Photo: Andrew Green
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Ucla xenogrammus
Ucla xenogrammus
Ucla xenogrammus
Ucla xenogrammus
Ucla xenogrammus
Ucla xenogrammus

Distribution

Temperate Australasia, Temperate northern Pacific, Tropical Eastern Pacific, Tropical Indo-Pacific


Description

Long wide snout, lower jaw longer than upper jaw, thin red stripe broken by white segments along centre of body, helmet-like plate on head behind eyes with yellow and pink markings, body with oblique red and white bands composed of small spots. Similar Helcogramma gymnauchen also has extended lower jaw.


Information

Max Size: 5 cm

Sea Temperature Range: 24.1-30.6°C

Depth: 2-41 m

Habitat Generalization Index: 7

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 (11.6% 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: 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