Chromis opercularis   (Gunther,  1867) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: Randall, J.E.

Size: 16.0 cm TL.

Color: Chocolate brown to brownish. A dark vertical stripe along hind preopercle edge and another along the upper part of gill opening. Dorsal and anal brown, posterior rays narrowly whitish. Membranes between ventral rays dark. Pectoral lighter, axil dark. Caudal brownish, posterior margin lighter.

Head 3.3-3.6 in standard length, 4.2-4.8 in total length. Depth of body 2.2-2.3 in standard length, 3.0-3.2 in total length. Eye diameter 3.1-3.2 in head, 0.6-0.7 in blunt snout and 1.0-1.2 in interorbital space. Preorbital and suborbital scaly. Three transverse rows of scales on preopercle. Pectoral and ventral fins equal in length, longer than head. Posterior border of preopercle concave. Caudal fin lobes pointed. Scales upto tip of snout.
Number of spines and rays in the dorsal fin: XIII, 11; number of spines and rays in the anal fin: II, 11; number of rays in the pectoral fin: ii, 16; number of spines and rays in the ventral fin: I, 5; number of scale rows along the lateral line: 18+9; number of horizontal scale rows usually counted from origin of the dorsal fin to the lateral line and from anal origin to the lateral line: 2+1+9.

Remarks: Values in above description denote proportions.

Synonym (s)
Heliastes opercularis Gunther, 1867
(Senior synonym)
Heliastes opercularis Gunther, 1866
Chromis opercularis Smith, 1960

Common Name (s)
• Doublebar Chromis (English)
• Bodunilamahi (Mahl)
• Barakkotti (Malayalam)
Economic Importance and Threats

Habitat:  Reef Associated
Trophic Level:  Secondary Consumer
Prey:  Planktonic invertebrates, benthic algae or weeds


• Lakshadweep, Kalpeni INDIA
• Lakshadweep, Minicoy INDIA
• Lakshadweep INDIA
• Andaman and Nicobar Islands, South Button Island INDIA

Literature Source(s)
  • UNEP World Conservation Monitoring Centre Available at -
  • Durville, P; Chabanet, P and Quod, JP (2003) Visual Census of the Reef Fishes in the Natural Reserve of the Glorieuses Islands (Western Indian Ocean) Western Indian Ocean J. Mar. Sci. WIOMSA 2 95-104
  • 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.
  • Garpe, KC and Ohman, MC (2003) Coral and fish distribution patterns in Mafia Island marine park Tanzania fish habitat interactions Hydrobiologia Kluwer Academic Publishers 498 191-211 Available at - NIO, RC Kochi
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at -
  • Jones, S and Kumaran, M (1980) Fishes of the Laccadive Archipelago The Nature Conservation and Aquatic Sciences Service, Trivandrum, Kerala 760 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Jones, S and Kumaran, M (1964) New records of fishes from the seas around India - Part I Journal of the Marine Biological Association of India Marine Biological Association of India 6(2) 285-306 Available at -
  • Jones, S. (1969) Catalogue of fishes from the Laccadive Archipelago in the reference collections of the Central Marine Fisheries Research Institute. Bulletin of Central Marine Research Institute CMFRI, Cochin 8 1-35 Available at -
  • (2011) Animal discoveries 2010 Zoological Survey of India 1-107 Available at -

Page last updated on:2011-08-12

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