Yes, some sushi is usually made with raw fish on top, though it can also be topped with cooked seafood, vegetables and other ingredients, like avocado and eggs. Sushi comes in many forms and with a variety of toppings, like fish roe, wasabi, soy sauce and pickled ginger. Eating raw fish, however, can be a risky business, as it may contain parasites, bacteria and salmonella, which can all make you sick. If you choose to eat sushi, make sure to purchase it from a reputable sushi restaurant, buy it as fresh as possible, check the temperature and, if you have any doubts, heat it up before eating.