The Differences Between Intensive and Extensive Fish Farming

The book encompasses the extensive fish farming system which is the least managed form of fish farming, in which little care is taken. This system involves large ponds measuring 1 to 5 ha in area with stocking density limited to only less than 5000 fishes/ha. No supplemental feeding or fertilisation is provided. Fish depends only on natural foods. Yield is poor (500 to 2 ton/ha), and survival is low. The labour and investment costs are low, and this system results in minimum income. An intensive fish farming system is the well-managed form of fish farming, in which all attempts are made to achieve maximum production of fish from a minimum quantity of water. This system involves small ponds/tanks/raceways with very high stocking density (10-50 fish/m3 of water). Fish are fed wholly formulated feed. Proper management is undertaken to control water quality by use of aerators and nutrition by use of highly nutritious feed. The yield obtained ranges from 15 to 100 ton/ha or more. Although the cost of investment is high, the return from the yield of fish exceeds to ensure the profit. The financial management in the intensive and extensive fish farming must be monitored by the farmers to forecast the yields. This book provide an insight on mitigation measures to be planned in advanced to minimize the losses incurred due to uneven growth rates or natural calamities. This book provides an introduction to intensive and extensive fish farming and it can be used by the undergraduates, postgraduates and research students who wish to work in the fish farming sector.

Dr. Navghan Mahida is a self-motivated fisheries scholar by qualification with over five years of work experience, including over 9 training programs and work exposure, possesses qualities of leadership, good communication & interpersonal skills, to do attitude, and ability to quickly adapt new environments. He is working as Assistant Professor in the Department of Animal Husbandry, Dairy and Fisheries, Parul University Vadodara-Gujarat. He had completed B.F.Sc (Bachelor of Fisheries Science) in 2012 from CoF-Veraval, Junagadh Agricultural University, Junagadh. He pursued M.F.Sc in 2014 and Ph.D. in 2019 from the Central Institute of Fisheries Education-Mumbai. He started his career as Fisheries Officer in the Government of Gujarat in 2013 and further worked in MNC Shoreline Aquaculture as Assistant Manager. He specialized in fisheries economics with commendable academic records and achievements. He has published 25 research papers in national and international peer-reviewed journals so far, including conduction and participation in conferences, conventions, symposiums, seminars, training, etc. He had written souvenirs for the students' convention programs and three popular articles. He is a lifetime member of fisheries and life sciences, the European Journal of fisheries. He is also a reputed editor in the journal of fisheries and life sciences, PLOS ONE San Francisco, California, USA, Asian Journal of Economics, Extension and Social Science Thailand etc.

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