Aquatic animal infectious diseases are steadily increasing resulting in major loses to aquaculture industry. Since the aquaculture is expanding industry to new geographic areas, new microbial and parasitic species with pathogenic potential will continue to emerge. To understand the principles of aquaculture health management, biosecurity and specific issues associated with the system will be discussed in this course. This knowledge will be gained through lectures, group discussion, case studies, written assignment submissions, and student presentations.