Ring wrasse (Hologymnosus annulatus) fish species and information / pictures of Ring wrasse - Hologymnosus annulatus

Ring wrasse (Hologymnosus annulatus) fish species information

Scientific Name
Hologymnosus annulatus

Common Name
Ring wrasse

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 (Ref. 48636). Juvenile H. annulatus very closely resemble juvenile Malacanthus latovittatus (Ref.1602). Poorly developed pharyngeal teeth (Ref. 1602).

Classification

Classified By
Lacep?de, 1801
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Wrasses (Labridae)

Distribution

Region
Indo-Pacific
Distribution
Indo-Pacific: Red Sea and South Africa (Ref. 11228) to the Society and Pitcairn islands, north to southern Japan, south to southeastern Australia and Rapa Island.
Range
32°N - 28°S

Environment

Climate
Tropical
Water Temperature From
25 °C
Water Temperature To
28 °C
Depth From - meters
Unknown m
Depth To - meters
30 m
Zone
reef-associated
Environment
Marine; reef-associated; depth range ? - 30 m (Ref. 30573)
Trophic Level
4.2 s.e. 0.73 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
True
Is kept in Aquariums
True

Physical Size and Genetics

Maximum Length
40.0 cm
Common Length
34.0 cm
Phylogenetic Diversity Index
PD50 = 0.5625 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: minor commercial; aquarium: commercial
Vulnerability
Moderate vulnerability (41 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Least Concern (LC)