Platycephalus scaber [Status Unaccepted]   (Linnaeus,  1758) (Fish)
Organism information awaits expert curation
Class: Actinopterygii

Image copyrights: Government of India

Size: 260 mm.

Color: Body grey dorsally and whitish below; black regular dots along lateral line, head and body. First dorsal fin clouded with black; soft dorsal fin and anal fin rays with rows of black dots which give a barred appearance; pectoral fins lower half dusky, upper half with rows of light spots; pelvic and caudal fins dusky and black at margins.

Height 8.1-9.3, 9.2-10.4 in length with caudal. Head 2.9-3.1, 3.3-3.5 in length with caudal. Eye 6.5-6.7, 2-2.1 in snout. Interorbital space flat between the supraorbital ridges, relatively broader in large than in small specimens, equal to or less than eye. Maxillary reaching to below anterior half of eye. Villi form teeth in the jaws, in two oval patches on vomer and in narrow elongated band on palatines. Anterior nostrils with a flap, posterior nostrils with a low tube or rim. No nasal spines. Supraorbital ridge with a strong spine in front of eye, smooth above middle of eye, serrated in its posterior part, continued as fan like diverging low ridges, the central one of which forming the superior postorbital ridge which has 2-4 spines in its posterior part. Inferior postorbital ridge low, with about 4 distant spines, ending in the larger suprascapular spine, behind which 53-57 scales of the lateral line each have a well developed spine. Suborbital ridge low with one or more small spines in front of eye, a spine below middle of eye and another behind eye, from this point the ridge is somewhat deflected and ends in the preopercular spine, this part of the ridge either smooth or with several spines. A short spine above base of preopercular spine which does not reach gill opening. Two shorter spines below it. Preopercle with rather large, cycloid, keeled scales, opercle with similar, but distinctly and smaller scales, especially those along superior and posterior borders of the bone. Head above without scales. About 10 rows of scales before dorsal. First dorsal spine small, connected by a low membrane to the second which is somewhat shorter than the third and longest spine. Third spine as long as snout and half eye. Anterior rays of second dorsal not much shorter than longest spines. Anal less deep than second dorsal. Pectorals rounded, as long as snout and half eye. Fifth ventral ray simple, fourth longest and nearly as long as head without snout. Caudal rounded. Lateral line spiny along its entire length, with 52 to 54 robust spiny scutes.

Remarks: The values in above description denote proportions.

Synonym (s)
Cottus scaber Linnaeus, 1758
Grammoplites scaber Talwar and Jhingran, 1991
Platycephalus scaber Day, 1876
Cottus scaber Bloch, 1786
Platycephalus scaber Bloch and Schneider, 1801
Platycephalus scaber Cuvier and Valenciennes, 1829
Platycephalus suppositus Troschel, 1840
Platycephalus scaber Bleeker, 1849
Platycephalus neglectus Gunther, 1860
Platycephalus neglectus Kner, 1867
Platycephalus scaber Sauvage, 1873
Platycephalus scaber Bleeker, 1879
Platycephalus scaber Sauvage, 1891
Platycephalus neglectus Jordan and Seale, 1910
Thysanophrys scaber Seale, 1910
Platycephalus scaber Barnard, 1927
Thysanophrys scaber Fowler, 1928
Thysanophrys neglectus Wu, 1931
Platycephalus scaber J. L. B. Smith, 1950
Grammoplites scaber Munro, 1955

Common Name (s)
• Rough Flathead (English)
• Irrwa (Telugu)
• Vetoolpathy (Tamil)
• Flat Head (English)
• Khukhari
Economic Importance and Threats
Importance:  Commercial

Habitat:  Estuarine


• Orissa, Mahanadi Estuary (Lat: 20.32) (Long: 86.75) INDIA
• Orissa, Jambu Island (Lat: 20.42) (Long: 86.72) INDIA
• Gujarat INDIA
• Kerala, Kochi INDIA
• Andaman and Nicobar Islands, Andaman Islands INDIA
• Tamil Nadu, Pulicat Lake INDIA
• Andhra Pradesh, Uppada INDIA
• Tamil Nadu, Mandapam INDIA
• Palk Bay INDIA
• Karnataka, Karwar Coast INDIA (Depth: 5-50m mts)
• Tamil Nadu, Adyar Backwaters INDIA
• Tamil Nadu, Cooum Estuary (Lat: 13.16) (Long: 80.26) INDIA

Literature Source(s)
  • Khan, RA (2003) Fish faunal resources of Sunderban estuarine system with special reference to the biology of some commercially important species Records of the Zoological Survey of India ZSI, Kolkata 1-149 Available at - NCL, Pune
  • Zoological Survey of India (Eds.) (1998) Fauna Of Mahanadi estuary, Orissa Estuarine ecosystem series no 3 ZSI, Kolkata 1-218 Available at - ZSI, Pune
  • Integrated Taxonomic Information System (ITIS) Available at -
  • Nagabhushanam, AK and Krishnan, S (1993) Observations on the distribution of some of the marine organism inhabiting the inter-tidal zone along the western continental shelf of the Bay of Bengal, with particular reference to the Tamil Nadu coastal strip Records of the Zoological Survey of India 93(3-4) 449-490 Available at - ZSI, Pune
  • 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
  • Raj, PJS (2006) Macro fauna of Pulicat lake NBA bulletin No.6 NBA 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 -
  • Dholakia, AD (2004) Marine resources Fisheries and aquatic resources of India Daya publishing house 271-303 Available at - NIO, Goa
  • Biswas, KP (2009) Fishes around Indian Ocean Dominant Fish Groups Occurring in Indian Coasts Daya publishing house Available at - NIO,Goa
  • Panikkar, NK and Aiyar, RG (1937) The brackish water fauna of Madras Proceedings of the Indian Academy of Sciences, Section B Indian Academy of Sciences, Bangalore, India 6(5) 284-337 Available at - NIO, Goa

Page last updated on:2012-02-29

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