The claim is that they are difficult to catch sometimes makes it hard to monitor them in a pond also. It could be that only the smaller ones gave you some action Sunil, they are prone to do that in a lake as well, big fish aren't always the most active, and only feed on larger bait. What did you catch them on if you can remember?? You surely have aone or two that grew better than an inch a year in your forage rich environment. Did you purchase them that size or catch and carry? Inquiring minds.
