Pempheris affinis
Black-tipped bullseye | Blacktip Bullseye
Distribution
Temperate Australasia, Tropical Indo-Pacific
Description
Characteristic bullseye profile with large head, almost straight back and rapidly tapering lower body. Gold or silver colouration, with small scales, conspicuous pale lateral line and back in gold colour forms, dorsal and tail fins with black tips, ventral fin with black marginal stripe. It is easily distinguished by the black markings at the tips of the dorsal and tail fins, and by the golden lateral line. The blacktip bullseye is often seen in mixed schools with the smallscale bullseye on reefs along the east coast. Found in caves and under ledges during the day. Endemic to eastern Australia.
Information
Max Size: 15 cm
Sea Temperature Range: 15.3-25.6°C
Depth: 4-30m
Habitat Generalization Index: 12.15
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 (36.4% 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 (39 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