Hi Singy,
I had a look at the pics and they're all Rohu!I guess the best way to tell them apart is by looking at the head and mouth of the fish.
'Classic Rohu' would be the ones with the light blue background. Rohu are a important food fish here and are raised in many ponds and lakes for the market. As most fish breed in the monsoons, lakes are stocked during the rains, they are then harvested just before the next monsoon when water levels are low and they've reached about a kilo.
Rohu are pretty decent fighters espcially when caught on light line. They're known for lightning fast runs and sometimes jump out of the water. They are also pretty fussy when it comes to taking bait and hence not many people target them.
The fish I caught was while mahseer fishing at the Cauvery. The section of the river I was fishing that morning was called 'crocodile rocks' which is deep and slow moving, in the summer its almost like a lake. This stretch is know for its large mahseer, rohu and pink carp. The pink carp is another beautiful fish, but I don't have a picture of one. The best picture of one I've seen is in one of John Bailey's freshwater angling books.
Regards,
Indian Angler.