Please study the morphometric and meristic characters of this fish and proceed according to the book entitled "Fishes of India". I hope you would be able to identify this fish. Please follow the Text part and Plate of the stated book.
Rakamaly Madi Moussa has given at species level. In my view, it is Haemulidae and resembles Plectorhinchus Genera. Plz verify with standard key for species level confirmation.