This volume details techniques involved to study aquatic pathogens that cause infections, especially in fish. Chapters guide readers through a wide range of basic and advanced methods, viral and fungal pathogens, probiotic bacteria, treatment of pathogens using seaweed extract, medicinal plant extracts, and actinomycetes. Authoritative and cutting-edge, Aquaculture Microbiology aims to be a useful practical guide to researches to help further their study in this field.