Hi Groper, eating raw fish can cause small worms to end up in your stomack which will cause considerable pain, but the good news is your stomack acids will get rid of them in a couple of days. The bad news (there is always a down side) if the larvae finds its way into your intestines, then your in trouble, because they then have to be removed manually by the insertion of a tube. Cooking or freezing fish kills these worms, so guess how I eat fish?
Regards Jeff