Priacanthus hamrur

Crescent-tail bigeye | Bigeye | Black-spot Bigeye | Lunar-tailed Glasseye | Moontail Bullseye | Red Bullseye | Scad
Priacanthus hamrurPriacanthus hamrur, Red Sea, Photo: Rick Stuart-Smith
Priacanthus hamrurPriacanthus hamrur, South Wales, Australia, Photo: Ian Shaw
Priacanthus hamrurPriacanthus hamrur, NSW, Australia, Photo: Ian Shaw
Priacanthus hamrurPriacanthus hamrur, Raja Ampat, Indonesia, Photo: Andrew Green
Priacanthus hamrurPriacanthus hamrur, Coral Sea, QLD, Photo: Andrew Green
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Priacanthus hamrur
Priacanthus hamrur
Priacanthus hamrur
Priacanthus hamrur
Priacanthus hamrur


Tropical Indo-Pacific


Variable colouration from bright or dark red to silvery, with the ability to rapidly fade or darken into blotches or vertical bands. Indistinct black spot at base of pelvic fin, like P. blochii (Glasseye), but has more lunate tail margin than other Bigeye species. During the day hovers motionless amongst coral, in caves or under ledges.


Max Size: 45 cm

Sea Temperature Range: 18-30.8°C

Depth: 8-250m

Habitat Generalization Index: 5.79

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 (4.1% 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: Several (5 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

Further Information