Pseudorhombus javanicus   (Bleeker,  1853) (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Actinopterygii
Order:Pleuronectiformes
Family:Paralichthyidae

Image copyrights: Hermosa, Jr., G.V.

Description
Size: Maximum about 25 cm; common 10 to 20 cm

Color: Body brownish, a distinct, large dark blotch at junction of straight and curved parts of lateral line and a smaller blotch on middle of straight section of lateral line, many dark rings scattered on body.

Rather elongate, dorsal profile either gently sloping upwards or somewhat arched above eyes. Height 2-2.5, 2.5-2.9 in length with caudal. Head 3.1-3.5, 3.7-4.1 in length with caudal. Eyes 3.4-4.5, nearly equal, the upper one above, somewhat before or somewhat behind the lower one, equal to snout, twice or more than twice in postorbital part of head, separated by narrow bony ridge only. Upper jaw with a row of pointed teeth, the anterior ones longer, caninoid and less crowded. Lower jaw with about 15 somewhat distant teeth of moderate length in left half, about 20-25 in right half. Maxillary scaly on colored side, 1.8-2.3 in head, reaching to below middle of eye. Tongue smooth. Origin of dorsal beginning on blind side, distinctly in advance of anterior nostril, a straight line through origin of dorsal and posterior nostril does not touch the maxillary. Dorsal and anal rays small, excepting the hind-most scaled, the subposterior ones the longest. Origin of anal in vertical through hind border of operculum. Praeanal spine well developed, pierced through the skin. Dorsal and anal ending close to caudal, which is bluntly pointed. Scales ctenoid on anterior half of colored side, cycloid on its posterior part and on whole of blind side, covering the head with exception of the snout. The forward prolongation of the lateral line reaches the upper profile at the 10th or 11th dorsal ray. Left pectoral much longer than right one, equal to or longer than postorbital part of head. Right pectoral equal to snout and eye or to postorbital part of head. Ventrals slightly shorter than right pectoral. Eleven compressed lanceolate gillrakers, dentated behind and preceded by 2 or 3 short knob-like ones on lower branch of anterior arch, one third of eye.
Upper profile of head without notch in front of eye. Scales on eyed side ctenoid on anterior part and dorsal and ventral margins of body on eyed side, cycloid on remaining areas. Pectoral fin on ocular side with 11-12 soft rays. Dorsal spines (total): 0 - 0, Dorsal soft rays (total): 67 - 76, Anal spines: 0, Anal soft rays: 51-56.

Remarks: Values in above description denote proportions.


Synonym (s)
Pleuronectes nauphala Hamilton-Buchanan, 1822
Rhombus javanicus Bleeker, 1853
Pseudorhombus javanicus Gunther, 1862
Pseudorhombus javanicus Bleeker, 1872
Pseudorhombus javanicus Day, 1888
Platophrys javanicus Evermann and Seale, 1906
Pseudorhombus javanicus Jenkins, 1910
Pseudorhombus javanicus M. Weber, 1913
Platophrys javanicus (Bleeker, 1853)

Common Name (s)
• Javan Flounder (English)
• Java Flounder (English)
• Left Hand Flounder (English)
Economic Importance and Threats
Importance:  Commercial
(Fisheries, marketed fresh or dried)

Ecology
Habitat:  Benthic, Demersal
Trophic Level:  Secondary Consumer
Prey:  Zoobenthos, small invertebrates and fishes

Biogeography


• West Bengal, Kiagoria INDIA (Record: 1981-1982)
• West Bengal, Digha Coast (Lat: 21.61) (Long: 87.53) INDIA
• MYANMAR
• Kerala INDIA
• West Bengal, Digha Ghole (Lat: 21.61) (Long: 87.53) INDIA (Record: 1981-1982)
• West Bengal, Digha Mohana (Lat: 21.61) (Long: 87.53) INDIA (Record: 1981-1982)
• Maharashtra, Mumbai INDIA
• INDIA
• Andhra Pradesh, Off Visakhapatnam (Lat: 17.73) (Long: 83.55) INDIA (Record: 04/1989-03/1990) (Depth: 50 mts)
• West Bengal (Lat: 21.45) (Long: 87.9) INDIA
• Tamil Nadu, Adyar Backwaters INDIA
• Tamil Nadu, Cooum Estuary (Lat: 13.16) (Long: 80.26) INDIA

Literature Source(s)
  • Ho, JS; Kim, IH and Kumar, AB (2000) Chondracanthid copepods parasitic on flatfishes of Kerala, India Journal Of Natural History Taylor and Francis 34(5) 709-735 Available at - http://dx.doi.org/10.1080/002229300299372
  • Chatterjee, TK; Talukdar, RS and Mukherjee, AK (2000) Fish and fisheries of Digha coast of West Bengal Occasional paper no 188 Records of the Zoological Survey of India 31778 Available at - NCL, Pune
  • Norman, JR (1928) The flatfishes (Heterosomata) of India, with a list of the specimens in the Indian Museum. Part 1 Records of the Indian Museum ZSI 29 7 Available at - Pune University, Pune
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Goswami, BCB (1992) Marine fauna of Digha coast of West Bengal, India Journal of Marine Biological Association of India The Marine Biological Association of India, Cochin 34 115-137 Available at - NIO, RC Kochi
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at - http://www.fishbase.org
  • 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 - http://www.marinespecies.org
  • Weber, M; Beaufort, LF (1929) The fishes of the Indo-Australian Archipelago E. J. Brill Ltd. 5 458 pp Available at - NIO, Goa
  • Bijukumar, A (1996) Nematode parasites associated with the flatfishes (order: pleuronectiformes) of the Kerala coast Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin, India 38(1&2) 34-39 Available at - NIO, Goa
  • Fischer, W and Whitehead, PJP (1974) FAO species identification sheets for fishery purposes. Eastern Indian Ocean - Fishing Area 57 and Western Central Pacific - Fishing Area 71 FAO, Rome 1 Available at - http://www.fao.org/docrep/009/e9163e/e9163e00.htm
  • Manna, B and Goswami, BCB (1985) A check-list of marine and estuarine fishes of Digha, West Bengal, India Mahasagar- Bulletin of the National Institute of Oceanography NIO, Goa 18(4) 489-499 Available at - http://nicmas.nio.org/Mahasagar/Mahasagar_V-18/Mahasagar_18%284%29_489.pdf
  • 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 - http://eprints.cmfri.org.in/571/1/Bulletin_10.pdf
  • 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 - eprints.cmfri.org.in/3975/1/Special_Publication_No_12_Revised.pdf
  • Sujatha, K (1995) Finfish constituents of trawl by-catch off Visakhapatnam Fishery Technology Society of Fisheries Technologists 32(1) 56-60 Available at - NIO, Goa
  • Das, P; De, SP; Bhowmik, RM; Pandit, IK; Sengupta, R; Nandi, AC; Thakurta, SC and Saha, S (2007) Piscine diversity of West Bengal Fishing chimes 27(5) 15-28 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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