Acanthurus bleekeri   Gunther,  1861 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Size: 30-36.9 cm

Color: Dark brown with longitudinal blue lines on the head and body. In life, the fish can change its color from dark to pale blue.

Body is compressed and oval-shaped. The mouth is small and terminal and bears small and numerous spatulate teeth with denticulate edges. Height 2-2.1, 2.6-2.7 in length with caudal. Head 3.4-4.2, 4.5-5.3 in length with caudal. Eye 3.2-3.9, 1.7-2.3 in snout, and 1.2-1.5 in convex inter orbital space. Profile of head regularly convex from snout to dorsal. Corner of mouth equidistant from hind border of preopercle and from eye. Teeth in jaws rounded, slightly tapering to their base, lobate. About 8-9 teeth in each ramus of both jaws. Nostrils close together before eye, the anterior one much larger than the posterior and with a posterior flap. Origin of dorsal slightly in advance of upper extremity of gill opening. First dorsal spine one third of second, which is more than one half of head. Following spines gradually increasing in length to the last, which equals snout and half eye. First dorsal ray slightly longer than last spine, rays gradually but slightly increasing in length to about the fifth, which equals snout and eye then slightly decreasing in length again, but the nine last rays rapidly decreasing in length, the fin being obtusely pointed. First anal spine equal to first dorsal one in length, third spine longest, as long as snout. Soft anal similar in shape to soft dorsal but less deep. Pectorals equal to or somewhat longer than head. Ventrals as long as snout and eye. Caudal emarginate or truncate, the lobes produced and pointed in adults. The fins are well developed and include a long and continuous dorsal fin with 9 spines and 24 to 26 soft rays, an anal fin of 3 spines and 23 to 24 soft rays and an emarginate to lunate caudal fin. The fish is armed with a lancet-like spine on either side of the relatively narrow caudal peduncle. The spine folds into a deep horizontal groove.

Remarks: Values in above description denote proportions.

Synonym (s)
Acanthurus mota Bleeker, 1854
Acanthurus bleekeri Gunther, 1861
Acanthurus bleekeri Bleeker, 1863
Acanthurus bleekeri Klunzinger, 1884
Acanthurus aurolineatus Day, 1876
Harpurus gnophodes Fowler, 1904
Acanthurus nigroris W. Weber, 1913
Acanthurus bleekeri Herre, 1927
Hepatus bleekeri Fowler and Bean, 1929

Common Name (s)
• Bleekers Surgeonfish (English)
• Blue Line Suregeon Fish (English)
Economic Importance and Threats
Importance:  Commercial
(Marketed fresh or frozen)

Habitat:  Reef Associated
Trophic Level:  Consumer
Prey:  Zooplankton


• Andaman and Nicobar Islands (Lat: 12.53) (Long: 92.82) INDIA
• Gulf of Oman
• Tamil Nadu, Chennai Coast INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Tamil Nadu, Vedalai INDIA
• Tamil Nadu, Cuddalore Coast INDIA (Record: 08/2008-09/2008, 12/2008)

Literature Source(s)
  • Rajan, PT (2003) A field guide to marine food fishes of Andaman and Nicobar Islands ZSI, 234/4, AJC Bose Road, 2nd MSO Building, (13th Floor), Nizam Palace, Kolkata-700 020 260 pp Available at - NCL, Pune
  • 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
  • Tun, MT (2001) Marine fishes of Myanmar (pelagic and demersal) U Than Tun, Director-General, Department of Fisheries, Ministry of Livestock and Fisheries, Myanmar 276 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Al-Abdessalaam, TZS (1995) Marine species of the Sultanate of Oman p 412 Available at - NIO, Goa
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at -
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at -
  • Beaufort, LF and Chapman, WM (1951) The fishes of the Indo-Australian Archipelago A. J. Reprints agency, Karol Bagh, New Delhi 9 484 pp Available at - NIO, Goa
  • Balachandran, K and Nizar, MA (1990) A check list of fishes of the Exclusive Economic Zone of India collected during the research cruises of FORV Sagar Sampada Proceedings of the first workshop on scientific results of FORV Sagar Sampada CMFRI, Cochin 305-324 Available at -
  • Murty, VS (1969) Catalogue of fishes (excluding from the Laccadives) in the reference collections of the Central Marine Fisheries Research Institute Bulletin of Central Marine Research Institute CMFRI, Cochin 10 1-38 Available at -
  • Lakshmi, A and Sundaramanickam, A (2011) Biodiversity of reef ichthyofauna in Cuddalore coast, southeast coast of India International Journal of Environmental Sciences Integrated Publishing Association 1(7) 1616-1621 Available at -
  • Pillai, PKM and Augustine, SK (2000) A code list of common marine living resources of the Indian seas CMFRI Special Publication No.12 CMFRI 1-115 Available at -

Page last updated on:2011-12-07

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