No one can ignore the role of economics in any commercial activities. Commercial fisheries is no exception to this. Unlike other commercial activities the major architect of the fisheries activities, about twelve is to one, are poor socially backward fishermen forces to take up this profession as they have to survive. The study has revealed that the productivity, profitability and objective contribution to the national economy by fishery units of artisanal types, are on an average, as good as, or better than those of mechanized fishing and high-tech culture fisheries. There come the need for cost earning studies. The information on costs and earnings inorder to assess the techno-economic and socio-economic performance of different fishery/fishing systems whether in the artisanal or in the high-tech fisheries. In the book, therefore, concentration had been laid on the issues like profitability in fish production, marketing system of fish and fishery products, study of demand and utilization pattern, most effective use of the fishery technology and implementation of fishery policies. It also covered the crucial issues like management of finance, insurance, social problems of fishermen and impact of organizational set up in fishery.'