Chromis dimidiata

Pomacentridae
Chocolate-dip Chromis
  • Chromis dimidiata, Red Sea, Photo: Rick Stuart-Smith
    Chromis dimidiata, Red Sea, Photo: Rick Stuart-Smith
  • Chromis dimidiata, Red Sea, Photo: Rick Stuart-Smith
    Chromis dimidiata, Red Sea, Photo: Rick Stuart-Smith
Distribution
Localised
Description
This species is restricted to the Red Sea. Populations in the Indian Ocean are now considered a separate species, C. fieldi, which has a more curved demarcation between white and black parts of the body (such that the white often covers more of the dorsal spines).
Information
  • Max Size: 9 cm
  • Sea Temperature Range: 21.5-32.9°C
  • Depth: 1-36 m
  • Habitat: Coral Reef
  • Habitat Generalisation Index: 23.9
    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: Widespread (79% 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 (202 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: Rick S-S
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