This, the third volume in the series Climate Change and Fish Health, describes how finfish in cage culture and their pathogens are directly or indirectly affected by ongoing changes to the environment. These changes, which include a global rise in water temperature with increased acidification and reduction in dissolved oxygen, will continue even if we can significantly reduce the current output of anthropogenic carbon dioxide and methane. The third edition of Diseases and Disorders of Finfish in Cage Culture has been renamed to be included in the series, and is completely updated and revised. It has: ? Nine updated chapters with new expert contributions from around the world ? A focus on the effects that climate change has, and will have, on finfish and their pathogens ? New material includes chapters on algal blooms, biosecurity and fish welfare ? An emphasis on practical recommendations and changes that can be made to improve fish health This book is key reading for all involved in cage culture of finfish, research scientists, ecologists, fish health consultants, veterinarians, policy makers and all who are interested in fish health and changes to the environment. It is a good reference text for 'workshops on fish health' and academic courses such as aquaculture and fish health. The other volumes in the Climate Change and Fish Health series are: Climate change and non-infectious fish disorders, Woo and Iwama (2020) Climate change and infectious fish diseases, Woo, Leong and Buchmann (2020).