Aquaculture and fisheries have a great significance in global economy. This book aims to understand the different methods to cultivate aquatic organisms for commercial purposes. It details the tools and techniques that are already being practiced worldwide. It also presents some case studies which shed light on the present scenario in fisheries and aquaculture. It also sets base for new research and suggests some innovative methods that can be put to practice. It discusses some crucial aspects of aquatic farming such as feeding, sustainability, quality of seawater, protection from predators, etc. The contributors of this book hail from the top universities of the world. They have contributed their research and their pool of knowledge to help students and professionals in the field of fisheries and aquaculture.