Most significant challenge for fisheries sector's development is difficulties similar to economical losses caused by fish illnesses & infections. Current research focuses on use of immune stimulants to cure fish illnesses sincere is currently no effective rapy for a few fish diseases, & rapies sometimes entail extra stress for fish. Climate alteration is one of world's most pressing concerns today. Greenhouse gases, chemicals, & heavy metals have increased as a result of human activity, & have played a major part in global warming. As a result, global levels, oxygen content, & water salinity have altered, as have viruses & harmful algae. Climate alteration will ultimately affect aquaculture & fisheries industries since seafood is susceptible to alteration in aquatic environments. Climate alteration will also put safety, variety, quantity, & worth of seafood, along with illnesses caused by seafood, at jeopardy. As a result, fish consumption will decline, & seafood producing industry will suffer. To prevent se harmful consequences, governments must develop collective food safety initiatives in addition to lowering greenhouse gas emissions & supporting environmental technology. Hazards that have arisen as a consequence of climate alteration must be addressed via Hazard Analysis & Critical Control Points (HACCP) programs.