Chromis atripectoralis
Blue-green chromis | Axilspot Chromis | Blackaxil Chromis
Chromis atripectoralis, Coral Sea, Australia, Photo: Rick Stuart-Smith
Chromis atripectoralis, Naigani Is, Fiji, Photo: Andrew Green
Chromis atripectoralis, Lord Howe Island, Australia, Photo: Ian Shaw
Chromis atripectoralis, WA, Australia, Photo: Rick Stuart-Smith
Similar Species
Same Genus
Distribution
Tropical Indo-Pacific
Description
Distinguished from C. viridis (Blue-green Puller) by light-margined black spot at pectoral fin base, visible when pectoral fin not held close to body. Occurs in large schools that retreat into staghorn coral when approached.
Information
Max Size: 12 cm
Sea Temperature Range: 19.1-31.1°C
Depth: 1-29m
Habitat Generalization Index: 20.79
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: Common (31.8% 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: Large aggregations (106 per transect)
Abundance is calculated as the average number of individuals recorded per RLS transect, where present.