We all have theories but most of us have no science, or science background, to back it up. I haven't seen any worry/concern from the DEC biologist, I assume, becasue catch numbers are great. Personally, I'd feel better knowing someone was trying to study it/run some small experiments to see if there is something that can be done. The Canadians have tried small experiments in recent years where they mixed natural Ganaraska fish with returning Credit River fish by clipping an adipose. A small experiment, but there were people who caught these fish, and most had no clue what they were.