Hi Manish and welcome aboard.
The guys here generally like the newbies to introduce themselves in the "Introductions" forum because everybody is so spread out that it helps folks with fishy interests to hook up.
That aside, I can't offer any specific advice on the species that you mention but generally the sorts of baits and tactics suggested for bream, crucians, roach and (especially in the case of rohu) mullet on UK websites (beefed up a bit) should see you right for these fish.
For some more Indian oriented takes on baits, remember that the IA search function is your friend and will turn up threads like this one.
http://www.indianangler.com/viewtopic.p ... light=rohu
It helps to remember that the effort involved in finding, adapting and employing alternative baits tackle and tactics pays dividends and will hopefully see you land more fish.
What strength line are you currently using ? Would you get more bites if you dropped down to a lower breaking strain ? If you did that and adjusted the drag to avoid break offs, could you safely let the fish run without loosing it in snags ? Would a braided hooklength which is softer and thinner than nylon (but just as strong) offer you a way of getting more bites and still be able to keep fish out of snags ?
These and a thousand other questions will allow a thinking angler to catch more than people who "r using the same setup" as everybody else.