Sushi is the most famous Japanese dish and one of the most popular dishes among the Japanese themselves. In Japan, sushi is usually enjoyed on special occasions, such as a celebration. There are many different types of sushi. The popular one is Nigiri. It is a small rice ball with fish, shellfish, etc. on top. There are countless varieties of nigirizushi, some of the most common ones being tuna, shrimp, eel, squid, octopus and fried egg.