In modern fish farming, chemicals play a central role in both treating disease and preventing its onset, which remains the single biggest source of financial loss in the sector. In recent years, a growing array of chemicals and biologically based products have also been incorporated as feed additives and water treatment agents to boost production levels. This expanding reliance on chemical inputs has sparked considerable public concern. The substances employed range from various lime formulations and fertilizers to a multitude of commercial products designed to accelerate growth and enhance water quality. Their advantages are numerous: they raise overall production efficiency, cut down on the consumption of other resources, and support higher hatchery yields and more effective feeding regimes. Moreover, they help improve the survival rates of fry and fingerlings until they reach market size, lessen the stress associated with transport, and aid in controlling pathogenic organisms, among many other uses.