Animal husbandry forms a very important part of Indian agriculture. Animal husbandry and Dairy development plays a prominent role in the rural economy in supplementing the income of rural households, particularly, the landless and small and marginal farmers. It also provides subsidiary occupation in semiurban areas and more so for people living in hilly tribal and drought prone areas where crop output may not sustain families. Pelagic fish 1. These are generally small in size and swim near the surface. 2. They are found in large shoals and may be caught close to the shore or far out at sea. 3. E.g., macrakel, herring, etc. Demersal fish 1. These fish live at the bottom of shallow seas. 2. They prefer cooler waters and thus, are most frequently found at depths of about 40 metres where sunlight can easily penetrate. 3. E.g., cod, halibut, etc.