This comprehensive volume covers the major viral, bacterial and fungal diseases in fi n- and shellfi shes. It completes the three-volume series on fi sh diseases and disorders; Volume I (published in 1995) is on parasitic diseases in fi n- and shellfi shes while Volume II (published in 1998) deals with non-infectious disorders in fi nfi sh. Reviews in the three volumes are written by international authorities that are actively working in the area or have contributed greatly to our understanding of specifi c piscine diseases or disorders. Authors in the present book are experts on infectious microbial diseases, and are from North America, Europe and Asia