Ring wrasse (Hologymnosus annulatus)

Scientific name: Hologymnosus annulatus Lacep?de, 1801

The Ring wrasse (Hologymnosus annulatus) is a marine fish of the family Labridae. In the aquarium it needs water at 25–28°C (77–82°F). Native range: Indo-Pacific, Red Sea and South Africa to the Society and Pitcairn islands, north to southern Japan, south to southeastern Australia and Rapa Island.

Ring wrasse care at a glance

Temperature: 25–28°C (77–82°F)

Biology

Dorsal spines (total): 9; Dorsal soft rays (total): 12; Anal spines: 3; Anal soft rays: 12. Two-color forms: the 'true' species in the Indian Ocean and Red Sea and its sibling in the Pacific regions. Females look almost black; males mainly greenish with blue face, of which Indian form shows a white band central to the body, whilst the Pacific form a pale peduncular area when in nuptial mode. Juvenile H. annulatus very closely resemble juvenile Malacanthus latovittatus. Poorly developed pharyngeal teeth.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Hologymnosus annulatus
Family: Labridae (Wrasses)
Order: Perciformes (Perch-like fish)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 40.0
Common length: 34.0
Depth range: 30 m (98 ft)
Environment: Marine; reef-associated; depth range ? - 30 m
Climate: Tropical
Distribution: Indo-Pacific: Red Sea and South Africa to the Society and Pitcairn islands, north to southern Japan, south to southeastern Australia and Rapa Island.
Conservation status (IUCN): Least Concern (LC)
Threat to humans: Harmless
Uses: Fisheries: minor commercial; aquarium: commercial
Resilience: Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)