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<p>Fish health management is a term used in aquaculture to describe management practices which are designed to prevent fish disease. Once fish get sick it can be difficult to salvage them. Successful fish health management begins with prevention of disease rather than treatment. Prevention of fish disease is accomplished through good water quality management nutrition and sanitation. Without this foundation it is impossible to prevent outbreaks of opportunistic diseases. The fish is constantly bathed in potential pathogens including bacteria fungi and parasites. Even use of sterilisation technology (i.e. ultraviolet sterilisers ozonation) does not eliminate all potential pathogens from the environment.</p><p>Fish disease is a substantial source of monetary loss to aqua culturists. Production costs are increased by fish disease outbreaks because of the investment lost in dead fish cost of treatment and decreased growth during convalescence. Unlike land animals where physical separation of the diseased animal is much easier fish in captivity also tend to be in larger numbers than found in nature.</p><p>This book will develop in the student an understanding of the principles of this subject. In order to make the subject simple and interesting every topic included in this book has been self- sufficient in itself and has been explained in the light of modern development in a simple and elegant style.</p>
