Hologymnosus annulatus   (Lacepede,  1801) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: Randall, J.E.

Max. size: 37.5 cm.

Color: Juveniles greenish yellow to yellow with a broad black stripe on lower side of head and body, extending onto caudal fin, and a narrow reddish stripe dorsally on body. Initial phase brown to olive-brown with 17 to 19 dark brown bars on side of body; a black smudge on opercular flap preceded by blue; caudal fin brown with a large whitish crescentic area posteriorly, the upper and lower edges narrowly light blue. Terminal male phase green, shading to blue-green ventrally, with about 17 purplish red bars on side of body; head purplish with broad irregular bands of iridescent blue-green; caudal fin blue, with a large crescentic green region posteriorly, the lobes with a broad band of rose-purple.

Body elongate, the depth 3.3 to 5.1 times in standard length. Dorsal profile of head nearly straight (convex on large individuals), becoming curved on nape; front of head forming an acute angle; jaws prominent, though mouth small; 4 prominent canines anteriorly in each jaw; no enlarged tooth at rear of upper jaw. Dorsal fin continuous, with 9 spines and 12 soft rays; the spines and anterior soft rays of similar length; anal fin with 3 spines and 12 soft rays; pectoral fins with 2 unbranched and 11 branched rays; pectoral fin not short, 1.65 to 1.9 times in head; caudal fin slightly rounded in juveniles, emarginate in adults, the caudal concavity about 5 times in head in large males. Lateral line abruptly curved below posterior portion of dorsal fin base, with 100 to 118 pored scales. Scales not extending onto bases of dorsal and anal fins; head scaleless, except for nape.

Synonym (s)

Common Name (s)
• Ring Wrasse (English)
Economic Importance and Threats
Importance:  Commercial
(Fisheries, marketed fresh, aquarium)

Habitat:  Reef Associated
Trophic Level:  Secondary Consumer
Prey:  Small fishes, crustaceans


Literature Source(s)
  • Wafar, MVM (2003) Checklists of reef fauna Available at - http://www.reefindia.org/
  • James, C; O'Farrell, S; Hamylton, S; Ingwersen, C and Walker, R The coral reef resources of Mu Ko Surin national park, Thailand Coral Cay Conservation Available at - www.coralcay.org
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at - http://www.fishbase.org
  • Rouphael, T; Turak, E and Jon, B Seagrasses and mangroves of Yemen's Red Sea 41-89
  • Heemstra, E; Heemstra, P; Smale, M; Hoopers, T and Pelicier, D (2004) Preliminary checklist of coastal fishes from the Mauritian island of Rodrigues Journal of natural history Taylor and Francis 38(23-24) 3315 - 3350 Available at - taylorandfrancis.metapress.com/ index/
  • Letourneur, Y; Chabanet, P; Durville, P; Taquet, M; Teissier, E; Parmentier, M; Quero, JC and Pothin, K (2004) An updated checklist of the marine fish fauna of Reunion Island, south-western Indian Ocean Cybium 28(3) 199-216
  • Chabanet, P and Patrick, D (2005) Reef Fish Inventory of Juan De Novas Natural Park (Western Indian Ocean) Western Indian Ocean Journal Marine Sciences 2005 WIOMSA 4 145-162
  • Allen, GR and Mohammed, A (2003) Coral Reef Fishes of Indonesia Zoological Studies 42(1) 26299 Available at - Digital Information Resource Center, Pune.
  • Fischer, W and Bianchi, G (Eds.) (1984) FAO species identification sheets for fishery purposes. Western Indian Ocean (Fishing Area 51) FAO, Rome 2 Available at - http://www.fao.org/docrep/009/ad468e/ad468e00.HTM#Contents
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org

Page last updated on:2010-04-21

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