Abstract

Disease is a major threat in aquaculture production system. Among different diseases bacterial disease, creating significant impact on animal production, is a major issue influencing aquaculture productivity, growth and evolution. Bacteria are naturally present in the aquatic environment and whenever any environmental condition favours or host becomes immunologically suppressive, they take advantage and cause huge mortality. Some of the bacteria are essentially opportunist pathogen and very few appear to be obligatory parasites also. Early detection of pathogen and proper diagnosis is the key to successfully prevent and cure the diseases from the culture system. An extensive review of chief bacterial infection affecting aquaculture provided in this chapter. Furthermore, emphasis is given on an alarming global concern of antimicrobial resistance (AMR) and zoonotic potential of many bacterial species.