Can anyone tell me these species ? its found along the Indian coast ?
This is probably the juvenile of the Coloured righteye flounder, Poecilopsetta colorata Günther 1880 (family PLEURONECTIDAE, subfamily POECILOPSETTINAE).
The spotted juvenile was described and illustrated as Poecilopsetta maculosa by Alcock (1894), which is a junior synonym. The adult is uniform silvery, with dark fins.
The species is distributed from India to the South China Sea and Indonesia.
Please note that in the original description of Poecilopsetta colorata by Günther (1880:48, Pl. 22B) [Report on the shore fishes procured during the voyage of H. M. S. Challenger in the years 1873-1876 v. 1 (pt 6); Catalog of Fishes ref. 2011], also a more or less uniform, lighter colouration (however with some freckles) and darker fins is shown.
The Coloured righteye flounder, Poecilopsetta colorata Gunther 1880 is often caught form the trawlers operated in deeper waters of Gulf of Mannar, South east coast of India.
The know distribution range of the fish is known from eastern Indian Ocean to South China Sea and Indonesia (Source: D.A. Hensley).
In 1899, Poecilopsetta colorata was reported from Andaman Sea as Boopsetta maeulosa. It distribution is from the Gulf of Mannar to the Kai Island. (Source: Memories of Indian Museum: A list of the fishes known from the Andaman Islands by Albert. W. C. T. Herre)
Günther (1880) is freely available for download through the Biodiversity Heritage Library,
http://www.biodiversitylibrary.org/item/45706#page/3/mode/1up
On page 49, the colouration is described as follows:
Light brownish; head and body with numerous black dots; dorsal and anal blackish; caudal with a large black spot near its upper and lower margins; pectoral with a large black spot occupying nearly the whole fin.
Additional literature you may wish to consider includes the following:
Alcock, A. W. 1894: Natural history notes from H. M. Indian marine survey steamer `Investigator,', Commander C. F. Oldham, R. N., commanding. Series II., No. 11. An account of a recent collection of bathybial fishes from the Bay of Bengal and from the Laccadive Sea. Journal of the Asiatic Society of Bengal v. 63 (pt 2): 115-137, Pls. 6-7. [Also as a separate, pp. 1-23, with original pagination at bottom.]
Identification key in:
Quéro, J.-C., D. A. Hensley and A. L. Maugé 1988: Pleuronectidae de l'île de la Réunion et de Madagascar. I. Poecilopsetta. Cybium v. 12 (no. 4): 321-330.
Illustration of the adult with nearly uniform, spotless colouration of body and dark fins:
Li, S.-Z. and H.-M. Wang 1995 (Sept.) [ref. 16193]
Fauna Sinica. Osteichthyes. Pleuronectiformes. Science Press. Beijing. i-vii + 1-433, Pl. 1.
Synonymy:
Norman, J. R. 1931. Two new flatfishes from the Indo-Australian Archipelago, with a synopsis of the species of the genera Poecilopsetta and Nematops. Treubia (Buitenzorg) v. 13:421–426.
Evseenko, S. A. 2004: Family Pleuronectidae Cuvier 1816 -- righteye flounders. California Academy of Sciences Annotated Checklists of Fishes No. 37: 1-37.
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