My point is that just because there are bacteria and viruses surounding us doesn't result in all of us getting sick. And the same applies to parasites. Plenty of people in the world live among parasites and a lot of them get sick from them but there are many who don't. And the fact that you can find parasites on an animal doesn't mean they were affected by it. We all have dangerous bacteria and viruses in our bodies and we don't succumb to them.Diseases is one thing, parasites is something else. Almost all wild fish have parasites. I would say they ALL do but I don't have time to find the paper I read on the internet that actually put an average number to the amount of parasites a single marine fish carries. Its a crazy high number.