Hologymnosus annulatus

Labridae
Ringed Slender Wrasse, Narrow-banded Rainbowfish, Ring Wrasse, Ringwrasse
  • Hologymnosus annulatus, Male, Bali, Indonesia, Photo: Ian Shaw
    Hologymnosus annulatus, Male, Bali, Indonesia, Photo: Ian Shaw
  • Hologymnosus annulatus, Female. Photo: Rick Stuart-Smith
    Hologymnosus annulatus, Female. Photo: Rick Stuart-Smith
  • Hologymnosus annulatus, Juvenile, Tanzania, Photo: Rick Stuart-Smith
    Hologymnosus annulatus, Juvenile, Tanzania, Photo: Rick Stuart-Smith
  • Hologymnosus annulatus, Juvenile, NSW, Australia, Photo: Ian Shaw
    Hologymnosus annulatus, Juvenile, NSW, Australia, Photo: Ian Shaw
  • Hologymnosus annulatus, Male, WA, Australia, Photo: Rick Stuart-Smith
    Hologymnosus annulatus, Male, WA, Australia, Photo: Rick Stuart-Smith
  • Hologymnosus annulatus, Male, Red Sea, Photo: Rick Stuart-Smith
    Hologymnosus annulatus, Male, Red Sea, Photo: Rick Stuart-Smith
  • Hologymnosus annulatus, Juvenile, With Parupeneus cyclostomus. Naigani Is, Fiji, Photo: Andrew Green
    Hologymnosus annulatus, Juvenile, With Parupeneus cyclostomus. Naigani Is, Fiji, Photo: Andrew Green
Distribution
Tropical Indo-Pacific
Description
Elongate olive body with numerous narrow dark bands. Terminal males with deeper body profile than H. doliatus (Pastel Slender Wrasse), crescent shaped mark on tail fin, green body and purple banding. Juveniles black with a broad pale yellow stripe from snout along upper body to tail base, and a thin dark stripe from head along base of dorsal fin.
Information
  • Max Size: 40 cm
  • Sea Temperature Range: 19.3-31.3°C
  • Depth: 8-40 m
  • Habitat: Coral Reef, Rocky Reef, Soft sediment
  • Habitat Generalisation Index: 6.2
    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: Least Concern
  • Occurrence: Infrequent (7% 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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