The only fish I eat are out of my family farm pond. It sits high on a ridge away from any neighboring runoff so I know it is safe.

Along the same lines as Tilapia, check out the video below. Next time you buy fish from Kroger or wherever you shop, check the country of origin. Lots of "Farm Raised Catfish" are from Vietnam or China and are likely coming from farms like this...

http://vimeo.com/11817894