Tiger musky (since they are a hybrid) do not have as long of a lifespan as either purebred species they are crossed with. The life expectancy for a Tiger is about 8-10 years.
If the last time the fish were stocked, was in 1997, any survivors would have to be atleast 13yrs old. Not impossible, but very improbable. Especially for a cooling lake.[/quote]
You dont think that ANY of the stocked fish could have spawned and have been reproducing all along??