Platycephalus tuberculatus   Cuvier,  1829 (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Size: 500 mm.

Color: Body brownish above, whitish below, with dark mottling and indistinct vertical bands. Spinous dorsal fin blackish-brown, the second dorsal fin spotted; pectoral fins with brown spots in upper two thirds and a white margin, and black submarginal band below.

Body compressed. Height 6.7-7.5, 8-8.8 in length with caudal. Head 2.6-2.75, 3.2 in length with caudal. Eye 3.8-4.4, 1.25-1.3 in snout. Interorbital space concave, 2.5-2.6 in eye. Anterior nostril with a flap. Maxillary reaching about below front border of pupil. Villi form teeth in jaws, in 2 patches on vomer, and on palatines. The teeth on symphysis of upper jaw, on posterior part of vomer, and on palatines, enlarged. Two serrated ridges on snout, beginning between anterior nostrils, converting backwards into one, and ending at beginning of interorbital space. A low preorbital spine. Supraorbital ridge denticulated, two to five strong spines on anterior orbital rim. Superior and inferior postorbital ridges denticulated, last named ending in two suprascapular spines which form the beginning of a row of somewhat curved spines, one on each of the 15-20 anterior scales of the lateral line. These spines gradually decreasing in size posteriorly. Suborbital ridge finely denticulated, some of the denticulations bifid, ending in the rather strong preopercular spine which does not reach gill opening. Two or three smaller spines below it. Opercle with two spines, the lower one at the end of a longitudinal denticulated ridge, which crosses the middle of the bone. All the bones rugose. Head scaleless above, opercle and preopercle scaled, these scales partly rudimentary, converted into spiny tubercles. First dorsal spine small, third longest and about equal to or slightly shorter than postorbital part of head. Dorsal rays slightly longer than longest spine. Anal less deep than second dorsal. Pectorals rounded, as long as snout and eye, the median rays forked. Ventrals with the fifth ray simple, the fourth longest, reaching anal. Caudal rounded. Scales of upper part ctenoid. Lateral line with 52 to 55 scales, the anterior 15 to 20 bearing spines.

Remarks: The values in above description denote proportions.

Synonym (s)
Platycephalus tuberculatus Cuvier, 1829
Platycephalus townsendi Regan, 1905
Platycephalus tuberculatus Gunther, 1860
Platycephalus tuberculatus Day, 1876
Platycephalus tuberculatus Max, 1911
Insidiator tuberculatus McCulloch, 1914
Thysanophrys tuberculatus Fowler and Bean, 1922
Sorsogona serrulata Herre, 1940
Platycephalus tuberculatus J. L. B. Smith, 1950
Suggrundus tuberculatus Munro, 1955

Common Name (s)
• Knobby Flathead (English)
Economic Importance and Threats
Importance:  Commercial



• Tamil Nadu, Rameswaram INDIA

Literature Source(s)
  • Talwar, PK and Kacker, RK (1984) Commercial sea fishes of India ZSI, Calcutta 997 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Beaufort, LF and Briggs, JC (1962) The fishes of the Indo-Australian Archipelago Pataudi House, Daryaganj, New Delhi 11 481 pp Available at - NIO, Goa
  • 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 -

Page last updated on:2011-06-01

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