Fishery commonly involves the method of catching, processing or selling of fish, shell fish and other important aquatic animals having high economic value. Fishes contribute to the common component of our everyday food including fish products, prawn, crab, lobster, edible oyster, etc. These form a protein rich diet for human beings. Fishery also plays an important role in the Indian economy. This is because a large part of world population is dependent on fishes as a source of food. India is among the six foremost sea food producing nations in the world at present. As fishery is an employment generating industry. Both freshwater fishes and marine fishes are of high economic value.