You guys would be surprised at the amount of differant parisites there are in the meat of the fish you eat.As some of you know I made a living up in the Berring sea slaughtering our oceans.The Factory proccessors use what is called a candling table to catch the fish with tumors,parisites,etc.It is just a very bright,under lit table.The light shines through the fillet and the infected fish are rejected.Actually it is often made into fish meal or sereme{I do not know how to spell it but basicaly it is the fake crab you see at the grocery store}What I saw was amazing at times.Any time we would fish around a seal rookery the fish would be full of worms.Older fish are prone to have parisites of differant sorts.We used to go out off the petrol banks and get 60 70 lb cod and they would usually be infected with something.It is almost enough to make a guy quit eating fish.But then again do you really want to know what accidently ends up in your smukkers jelly or your ketchup?