Aquaculture refers to the farming of aquatic organisms including fish, molluscs, aquatic plants, algae and other organisms. It primarily deals with the cultivation of freshwater and saltwater populations of these organisms. There are various kinds of aquaculture such as fish farming, algaculture, oyster farming, shrimp farming and mariculture. Fish farming is one of the most widely practiced farming in aquaculture that involves raising fish for commercial purposes. The most important species of fish produced in fish farming are salmon, catfish, tilapia and carp. Algaculture involves the farming of different species of algae. The common methods of aquaculture are aquaponics and integrated multi-trophic aquaculture. The topics included in this book on aquaculture and fish farming are of utmost significance and bound to provide incredible insights to readers. Most of the topics introduced herein cover new techniques and the applications of aquaculture and fish farming. This book will serve as a valuable source of reference for those interested in this field.