Cooking the meat completely thru will kill any parasites. Most parasites transferred to humans is thru undercooked meat. If I saw the parasites on the fish it makes it hard to eat knowing they were there even if the fish is cooked. This is why it is not good to transfer fish from different bodies of water. This can spread the parasites and even disease to a new body of water that was clean. Just be careful when preparing the food and cook it all the way thru.