Pomacentrus grammorhynchus

Pomacentridae
Bluespot Damsel, Orange-tail Damsel
  • Pomacentrus grammorhynchus, Adult, Great Barrier Reef, Cairns, QLD, Photo: Andrew Green
    Pomacentrus grammorhynchus, Adult, Great Barrier Reef, Cairns, QLD, Photo: Andrew Green
  • Pomacentrus grammorhynchus, Raja Ampat, Indonesia, Photo: Rick Stuart-Smith
    Pomacentrus grammorhynchus, Raja Ampat, Indonesia, Photo: Rick Stuart-Smith
  • Pomacentrus grammorhynchus, QLD, Australia, Photo: Rick Stuart-Smith
    Pomacentrus grammorhynchus, QLD, Australia, Photo: Rick Stuart-Smith
  • Pomacentrus grammorhynchus, Juvenile, Northern Great Barrier Reef, Photo: Joe Shields
    Pomacentrus grammorhynchus, Juvenile, Northern Great Barrier Reef, Photo: Joe Shields
Distribution
Tropical Indo-Pacific
Description
Light blue spot on upper tail base, orange to black spot at pectoral fin base, and orange hue to tail. In coral in sheltered lagoons.
Information
  • Max Size: 9 cm
  • Sea Temperature Range: 22.4-30.8°C
  • Depth: 1-12m
  • Habitat: Coral Reef
  • Habitat Generalisation Index: 7.4
    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: Habitat degradation
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Frequent (12% 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 (19 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
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