I recently received a survey to have my blood tested by the NYS department of health. They were looking for anglers that eat fish out of Lake Ontario. ALL of my levels came back way below the levels of concern. I asked the lady from the DOH why they grind the entire fish to test for contaminants. She told me it was because some people use the entire fish for a meal (boiling heads for fish head soup was one of the ways the used more than the meat). I eat a lot of perch, pike and trout and salmon. As long as you eat in moderation and filet the belly fat off, I would not hesitate to eat Lake Ontario fish. Besides, the oceans are not any cleaner. You do not have third world countries dumping god knows what into Lake Ontario.