I'm no researcher or fish biologist but Keuka, I feel, has a laker problem. There's too many Lakers. The description of no food, characteristics that they're skinny, have big heads tells me their population is out of hand. Theyve eaten themselves out of house and home. Other fish in different temp zones seem to be doing fine. Maybe I'm simplifying the problem. I'd also say some are right in that mussels have contributed. Can the laker creel limit be increased or dropped altogether to help the problem? Adding predators will only make the problem worse. They stopped stocking browns and landlocked salmon in keuka from my understanding. Rainbows can survive on insects and other things that are outside the laker preferred temps. Someone mysteriously added walleye which I'm sure doesn't help the issue. Sounds like ALOT of Lakers need to be removed from keuka to slowly turn the tides. Sizes will recover. That lake is just overly successful in producing lake trout.