Holocentrus adscensionis, Abrolhos, Bahia, Brazil, Photo: Graham Edgar
Head and upper half of body red-brown, brown/yellowish stripes along body, white belly and tail base, first dorsal fin yellow with red or translucent tips on membranes, and often a curving white band on rear half of body. Similar H. rufus has paler first dorsal fin, and long, golden rear dorsal fin. A nocturnal species that is found in caves, crevices and under ledges in the reef during the day.
Max Size: 61 cm
Sea Temperature Range: 23.1-30.6°C
Habitat: Coral Reef
Habitat Generalisation Index: 7.8
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
IUCN Threat Status: Not Evaluated
Occurrence: Frequent (15% 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 (12 per transect)
Abundance is calculated as the average number of individuals recorded per RLS transect, where present.