I had seen you posted this awhile back, and was surprised the techie pondbossers have made no comments on it. Hibernation perhaps? I am not one for too much info overload techy details.
Ok, so I will bite.
So if I am understanding this correctly, it supports the notion that electroshocking and seining/netting are the best way to improve the situation of uncatchabilty? Also, how about when you remove the fish (not use the catch and release practice). Is this saying the other fish(not caught)see and learn this, then can pass it on. Where I am going with this is, even if you add new stock to the pond they will learn from their predecessors to not bite?