Monopterus albus is a kind of freshwater fish, with a slender body, snake shape, small scales and fishy smell. They live in tropical and temperate fresh water areas, and some species also enter salt water. Eel is the favorite food of gourmets, especially in Japanese cuisine. Electric eel is a kind of freshwater fish in South America, which can produce electric shock, hence its name. The electric eel has a cylindrical body, a flat head, a tapering tail and scales. They can generate 300-800 volts of electric shock to catch prey or protect themselves. Therefore, although eel and electric eel belong to fish, they are not the same kind of fish.