Pempheris oualensis

Oualan Bullseye | Bronze Sweeper | Cave Sweeper | Copper Sweeper | Keeled Bullseye | Keeled Sweeper | Oualan Sweeper | Silver Sweeper
Pempheris oualensis
Pempheris oualensis, Solitary Islands, NSW, Photo: Ian Shaw
Pempheris oualensis
Pempheris oualensis, Photo: Rick Stuart-Smith
Pempheris oualensis
Pempheris oualensis, Rose Atoll, American Samoa, Photo: Graham Edgar
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Pempheris oualensis
Pempheris oualensis
Pempheris oualensis


Tropical Indo-Pacific


Coppery colouration with a large, prominent black spot on pectoral fin base and small scales. Anal fin with black stripe along base, white stripe down middle and a clear outer margin, pectoral fin orange/pink. Found in caves and under ledges during the day.


Max Size: 20 cm

Sea Temperature Range: 19-30.4°C

Depth: 1-36m

Habitat Generalization Index: 13.11

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 (12.8% 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 (11 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