Hologymnosus annulatus
Ringed Slender Wrasse | Narrow-banded Rainbowfish | Ring Wrasse
Hologymnosus annulatus, male, Bali, Indonesia, Photo: Ian Shaw
Hologymnosus annulatus, female, Photo: Rick Stuart-Smith
Hologymnosus annulatus, juvenile, Tanzania, Photo: Rick Stuart-Smith
Hologymnosus annulatus, juvenile, NSW, Australia, Photo: Ian Shaw
Hologymnosus annulatus, male, WA, Australia, 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
Similar Species
![Hologymnosus sp. [dark]](/species//defaultspecies.webp)
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 Generalization Index: 6.21
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.
Conservation and Rarity
IUCN Status: Least Concern
Occurrence: Infrequent (7.2% 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