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

Image copyrights: HIPPOCAMPUS Bildarchiv

Size: 111-180 mm

Color: Dark brown, head darker than body, with two black marks at humeral region. Caudal spine in an oblong dark area. Dorsal and anal dusky brown. Caudal dusky brown, base lighter, posterior margin broadly white with submarginal blackish line and narrow white lower and upper edges on lobes. Pectoral dark brown with broad white outer margin. Ventral brownish, darker distally.

Head 3.4-3.7 in standard length, 4.7-5.0 in total length. Depth of body 2.2-2.3 in standard length, 2.8-3.0 in total length. Eye diameter 3.7-4.1 in head, 2.2-2.5 in snout and 1.2-1.4 in highly convex interorbital space. 8 teeth on each side in upper jaw, 8 or 9 teeth on each side in lower jaw. Corner of mouth nearer to hind border of preopercle than to eye. First dorsal fin spine small, 2nd twice as long as first, subsequent spines increasing in length, 6th to 9th subequal, about 1 3/4 eye diameter. First anal fin spine short, third longer than second but much shorter than longest dorsal spines. Pectoral fin equal to or a little less than length of head, ventral fin shorter than pectoral fin. Caudal fin lobes pointed, increasingly produced with age.
Number of spines and rays in the dorsal fin: IX, 23-24; number of spines and rays in the anal fin: III, 22-23; number of rays in the pectoral fin: ii, 15; number of spines and rays in the ventral fin: I, 5; number of scale rows along the lateral line: 145-157; 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: 14-16+62-73.

Remarks: Values in above description denote proportions.

Synonym (s)
Acanthurus bicommatus Smith, 1955
Acanthurus olivaceus (non Bloch & Schneid, 1801)
Acanthurus plagiatus Peters, 1876
Acanthurus tennenti Gunther, 1861
Hepatus sohal (non Forssk, 1775)
Acanthurus tennentii Day, 1878

Common Name (s)
• Lieutenant Surgeonfish (English)
• Rykathi
• Doubleband Surgeonfish (English)
• Pala
• Neythala
• Karutha Kotti
Economic Importance and Threats
Importance:  Commercial
(ornamental fish)



• Lakshadweep, Agatti INDIA
• Lakshadweep, Bitra INDIA
• Lakshadweep, Kavaratti INDIA
• Lakshadweep, Kilttan INDIA
• Lakshadweep, Minicoy INDIA
• Lakshadweep INDIA
• Lakshadweep Islands INDIA (Record: 11/1993-01/1997)

Literature Source(s)
  • Wafar, MVM (2003) Checklists of reef fauna Available at -
  • UNEP World Conservation Monitoring Centre Available at -
  • Ocean Biogeographic Information System Available at -
  • 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
  • Kemp, JM (1998) Zoogeography of the coral reef fishes of the Socotra Archipelago Journal of Biogeography 25 919-933
  • 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
  • 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 -
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at -
  • Murty, VS (2002) Marine ornamental fish resources of Lakshadweep CMFRI Special Publication CMFRI 72 1-134 Available at -
  • Ghosh, S; Ganeshamurthy, R; Balamurugan, J and Kumar, TTA (2011) Reef fishing- An off season amusement at Lakshadweep Fishing chimes 31(1) 128-130 Available at - NIO, Goa

Page last updated on:2011-06-17

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