This book deals with all major aspects including establishment of a new fish farm, its management, good practices, and ideal conditions for optimum production of fish. Important infectious and non-infectious diseases of fish have been amply elaborated along with methods of their diagnosis, prevention and control. Great emphasis has been given to the hygienic aspects in fish production and quality assurance of fish as food. The diseases transmissible to consumers through unhygienic fish and fish products are also highlighted. Lucid illustrations make the book a reading pleasure. The authors earnestly believe that this book will prove to be a unique resource for the students, educators and the professionals.