This compilation took more than two years, but the final product embodies years of experience and a vast range of expertise on the part of all the contributors. It is worth mentioning that fisheries biotechnology is in its infancy in most of the developing countries and a treatise on the subject would certainly provide a great fillip to the current research and HRD efforts. The book covers all major topics in fish biotechnology including the role of synthetic hormones in fish breeding, cytogenetics and molecular genetics, aquaculture and marine biotechnology, transgenesis, biotechnology and fish health management, cryopreservation of gametes, tissue culture and bioinformatics etc.