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You know with perch being such a fast growing fish that maybe they don't accumulate the amount of toxins that walleyes do. That seems to be the case with the mercury doesn't it? Even though the beach at the north end was covered (literally) from end to end with several layers of dead fish, I don't remember there being lots of perch there, just mostly suckers and big walleyes and pike.
From what I understand Mercury has to be ingested by one fish, and then that fish has to be eaten by a predator for the mercury to then enter the meat of said predator. This is why there are no warnings about eating many meals of panfish every month, but there are warnings about eating say lake trout more than just one meal per month.
was there a accident that led to more weed killer and manure into the lake last year? I don't remember Carmi having these problems in the past?