Aquaculture involves the farming of freshwater and saltwater organisms under controlled conditions. Various interventions in the rearing process are implemented to enhance production. Some of these include regular stocking, feeding, protection from predators, etc. Aquaculture is classified according to the species of organisms harvested, into fish farming, shrimp farming, oyster farming, etc. Aquaculture also focuses on animal welfare in terms of fitness, physical and mental well being. Modern techniques for sustainable aquaculture include the application of Integrated Pest Management, use of vaccines, adoption of recirculating aquaculture systems, etc. This book is compiled in such a manner, that it will provide in-depth knowledge about the theory and practice of aquaculture. It also discusses all relevant issues of adaptability and sustainability of aquaculture ecosystems. It aims to serve as a resource guide for students and experts alike and contribute to the growth of the field.