Genicanthus semicinctus

Pomacanthidae
Halfbanded Angelfish
  • Genicanthus semicinctus, Male, Balls Pyramid, NSW, Australia, Photo: Graham Edgar
    Genicanthus semicinctus, Male, Balls Pyramid, NSW, Australia, Photo: Graham Edgar
  • Genicanthus semicinctus, Female, Lord Howe Is, NSW, Photo: Rick Stuart-Smith
    Genicanthus semicinctus, Female, Lord Howe Is, NSW, Photo: Rick Stuart-Smith
  • Genicanthus semicinctus, Female, Lord Howe Is, NSW, Photo: Tom Davis
    Genicanthus semicinctus, Female, Lord Howe Is, NSW, Photo: Tom Davis
  • Genicanthus semicinctus, Male, Lord Howe Is, NSW, Photo: Rick Stuart-Smith
    Genicanthus semicinctus, Male, Lord Howe Is, NSW, Photo: Rick Stuart-Smith
  • Genicanthus semicinctus, Female, Balls Pyramid, NSW, Australia, Photo: Graham Edgar
    Genicanthus semicinctus, Female, Balls Pyramid, NSW, Australia, Photo: Graham Edgar
Distribution
Temperate Australasia, Tropical Indo-Pacific
Description
Males grey with black narrow vertical bands on upper body, orange-brown unmarked belly, orange tinge on back and dorsal fin, swallow tail with black spots, blue margins on orange upper and lower lobes and trailing filaments. Vertical bands less dense than on similar G. melanospilos (Swallowtail Angelfish) and absent over top of head. Females dark grey on upper body and pale on belly with blue margins on median fins and a blue arc encasing a black blotch above eye. Length to 21 cm.
Information
  • Max Size: 20 cm
  • Sea Temperature Range: 19.0-24.8°C
  • Depth: 10-100 m
  • Habitat: Coral Reef, Rocky Reef
Rarity
  • Threats: Exploitation
  • IUCN Threat Status: Least Concern
  • Occurrence: Frequent (10% 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: Few (2 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: Joe Shields
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