Shrimp tail belongs to seafood, shrimp tail is the tail of lobster. Lobster, divided into saltwater lobster and freshwater lobster two kinds. Mature saltwater lobster head is generally larger, body length is generally between 20 cm to 40 cm, weighing 0.5 kilograms up and down, no chelates, is the largest class of shrimp. The heaviest can reach more than 5 kilograms, known as lobster tiger. This saltwater lobster both wild sea, sea water farming, all belong to the seafood category. Freshwater lobsters, generally smaller in size when mature, are mainly distributed in Jiangsu, Hubei, Jiangxi, Anhui and other areas in the middle and lower reaches of the Yangtze River, growing in rivers, streams, lakes and other bodies of water. It should be noted that the freshwater crayfish is not a lobster. Crayfish scientific name Crayfish, just look more like a lobster. Therefore, the true meaning of lobster, belongs to the seafood category.