Catfish seems like a healthier food option (hey, it's fish), but you may want to check out your catfish whereabouts. Nearly 90 percent of catfish imported to the US comes from Vietnam, which has been linked with contaminated water, outdated facilities, and the use of antibiotics that are banned in the US, according to Amy Cramer and Lisa McComsey, authors of Seagan Eating: The Lure of a Healthy, Sustainable Seafood + Vegan Diet. Two varieties, Swai and Basa, aren’t technically considered catfish by the federal government and so are not subject to the same inspection standards as other imported catfish, say Cramer and McComsey. Yikes. So what are you eating?