Pomacentrus brachialis

Pomacentridae
Charcoal Damsel, Bar-finned Damsel, Black Damsel
  • Pomacentrus brachialis, Adult, Naigani Is, Fiji, Photo: Andrew Green
    Pomacentrus brachialis, Adult, Naigani Is, Fiji, Photo: Andrew Green
  • Pomacentrus brachialis, Juvenile. Photo: Rick Stuart-Smith
    Pomacentrus brachialis, Juvenile. Photo: Rick Stuart-Smith
  • Pomacentrus brachialis, Raja Ampat, Indonesia, Photo: Rick Stuart-Smith
    Pomacentrus brachialis, Raja Ampat, Indonesia, Photo: Rick Stuart-Smith
  • Pomacentrus brachialis, Raja Ampat, Indonesia, Photo: Rick Stuart-Smith
    Pomacentrus brachialis, Raja Ampat, Indonesia, Photo: Rick Stuart-Smith
  • Pomacentrus brachialis, Raja Ampat, Indonesia, Photo: Rick Stuart-Smith
    Pomacentrus brachialis, Raja Ampat, Indonesia, Photo: Rick Stuart-Smith
Distribution
Tropical Indo-Pacific
Description
Dark grey-brown with large black spot at pectoral fin base, and gold-ringed eye. Similar to P. alexanderae (Alexander's damsel) but dark rather than light body colour, also similar to P. philippinus (Philippines Damsel), but P. philippinus is black rather than charcoal and has 'cleaner' look to fins.
Information
  • Max Size: 8 cm
  • Sea Temperature Range: 23.3-30.8°C
  • Depth: 1-40m
  • Habitat: Coral Reef, Rocky Reef
  • Habitat Generalisation Index: 19.7
    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
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Common (34% 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 (78 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
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