Caracanthus unipinnus   (Gray,  1831) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: The Nature Conservation and Aquatic Sciences Service

Size: 20-34 mm

Color: Light brownish to bluish on back, gray below. Fins pale, dorsal and caudal sometimes light brownish.

Head and body greatly compressed, dorsal profile of head very steep. Head 2.4-2.8 in standard length, 3.0-3.4 in total length. Depth of body 1.7-2.0 in standard length, 2.1-2.4 in total length. Eye diameter 4.3-5.2 in head, 1.0-1.3 in snout and 0.6-0.7 in interorbital space. A narrow band of villiform teeth in jaws. Vomer and palatines edentulous. Preorbital with a short almost forwardly directed spine anteriorly and a longer spine directed obliquely downwards. Preopercle with 5 or 6 blunt spines, interopercle with a spine and opercle with 2 blunt spines. Membrane between spinous and soft part of dorsal fin hardly notched. Third or fourth spine of dorsal longest, slightly longer than eye diameter. Middle rays of dorsal fin longer than longest dorsal spine. Anal spines very short, rays much shorter than those of dorsal. Pectoral fin equal to or shorter than postorbital part of head. Ventral fins rudimentary. Head and body thickly covered with minute papillae.
Number of spines and rays in the dorsal fin: VII-VIII, 13-14; number of spines and rays in the anal fin: II, 11-12; number of rays in the pectoral fin: 12-13; number of spines and rays in the ventral fin: I, 3.

Remarks: Values in above description denote proportions.

Synonym (s)
Micropus unipinna Gray, 1831
Amphiprionichthys zeylonicus Day, 1878
Caracanthus unipinna Regan, 1908
Caracanthus unipinnus Smith, 1958
Caracanthus zeylonicus Smith, 1949

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated


• Lakshadweep, Agatti INDIA (Record: 1980)
• Lakshadweep, Minicoy INDIA (Record: 1980)
• Lakshadweep INDIA (Record: 1980)
• MALDIVES (Record: 1980)
• INDIA (Record: 1980)
• SRI LANKA (Record: 1980)

Literature Source(s)
  • 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 -
  • Kumaran, M; Murty, VS and Lalmohan, RS (1989) Resources of ornamental fishes Marine living resources of the union territory of Lakshadweep: An indicative survey with suggestions for development Bulletin of Central Marine Research Institute CMFRI 43 46-64 Available at -

Page last updated on:2011-04-20

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