This is the ninth of a series of publications of selected materials sponsored jointly by I@mak project and Fountain Publishers. The book has been designed for commercial fish farmers and aquaculture students in Africa and information put in such a way that it can be comprehended by persons with no formal training in aquaculture. A number of innovations that have been made on the few pioneer commercial fish farms in Africa are described. The book combines technical aspects of fish production with aqua-business principles and provides a basis for further innovations in the production and marketing of farmed fish. It is the authors’ sincere hope and belief that this book will make a contribution to the development of commercial aquaculture in Africa. The book deals with Fish Farming; Production of Fish Seed and its Utilisation; Fish Farming Systems; Management Practices; and the Aquabusiness.