The science of aquaculture advanced considerably in the 1980s, its application being an important factor in the agricultural economies of many countries. This book reviews the subject of fish nutrition, one of the key aspects of aquacultural systems. The development of any aquaculture system is dependent on knowledge related to many disciplines, including physiology, biochemistry, genetics, animal nutrition and ecology. The late Dr Hepher adopted this multidisciplinary approach, presenting, for the first time, an integrated and comprehensive account of the whole subject, first published in 1988. The author pioneered many of the most important concepts of fish nutrition and this work represents the distillation of some thirty years of work by a most distinguished and renowned freshwater biologist. It is sure to become a reference work of fundamental importance for research workers in freshwater fisheries biology and aquacultural systems.