Shrimp and Prawns are swimming, decapod crustaceans. Shrimp, widely distributed around the world in both fresh and salt water, belong to the group Caridea, . Adult shrimp are filter feeders living close to the bottom. Many live in schools and can swim rapidly backwards. Shrimp are an important link in food webs, providing food for larger animals from fish to whales.
Most Prawns belong to the group Penaeidae. In common usage, the terms "shrimp" and "prawn" are often used interchangeably. Shrimp and Prawns look very similar but can be distinguished by the fact that In shrimp the side plate of the second segment of the abdomen overlaps the segments in front and behind. In prawns all the abdominal side plates overlap tile-like from the front. Also the gill structure is branching in prawns. Another difference is that female prawns do not brood eggs but relase them into the water.