Enneapterygius howensis

Lord howe threefin | Lord Howe Island Triplefin
Enneapterygius howensis
Enneapterygius howensis, Lord Howe Is, NSW, Photo: Rick Stuart-Smith
Enneapterygius howensis
Enneapterygius howensis, Lord Howe Is, NSW, Photo: Rick Stuart-Smith
Enneapterygius howensis
Enneapterygius howensis, Lord Howe Is, NSW, Photo: Rick Stuart-Smith
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Enneapterygius howensis
Enneapterygius howensis
Enneapterygius howensis

Distribution

Localised, Temperate Australasia


Description

Female mottled red and white, and rear 2/3 of body in male light, with vertical black streaks and triangles above anal fin base. Differs from most similar species by location, and has slightly longer snout than E. rufopileus (Blackcheek Threefin).


Information

Max Size: 4 cm

Sea Temperature Range: N/A

Depth: 0-9m

Habitat Generalization Index: N/A

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: Widespread (58.5% 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: Many (25 per transect)

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


Edit by: Joe Shields