Holacanthus passer, Galapagos Islands, Ecuador, Photo: Graham Edgar
Holacanthus passer, Galapagos Islands, Ecuador, Photo: Graham Edgar
Holacanthus passer, Malpelo Island, Colombia, Photo: Graham Edgar
Distribution
Tropical Eastern Pacific
Description
Adults blue-grey with a vertical white bar on fore-body, blue margins on dorsal and anal fins and a red submargins, yellow tail and a patch of black containing blue spots on nape. Males with white pelvic fins and females with yellow. Juveniles orange with a blue bar on either side of the eye, a white bar behind head and a series of blue bars on sides. Observed undertaking cleaning activities, adults seen cleaning parasites off sharks.
Information
Max Size: 36 cm
Sea Temperature Range: 20.8-30.3°C
Depth: 1-80m
Habitat: Coral Reef, Rocky Reef
Habitat Generalisation Index: 30.8
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
Rarity
Threats: Exploitation
IUCN Threat Status: Least Concern
Occurrence: Widespread (68% 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 (8 per transect)
Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
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