CONTENTS:- 1. Introduction. 2. Fish Diseases and Parasites. 3. Disorders in FIshes. 4. Fish Kills. 5. Viral Diseases of Fish. 6. Salf Water Fish Diseases and Treatments. 7. Fish Diseases in India. 8. Epizootic Ulcerative Syndrome in Fish. 9. Fish Diseases in Aquaculture. 10. Diagnosing Symptoms. 11. Prevention and Theory of Fish Diseases. 12. Scientific Management of Fisheries. 13. Environmental Fishing. 14. Fish Genetics.