Flumequine is primarily used as an antibacterial agent in veterinary medicine. It is effective against a range of gram-negative bacteria and is commonly administered to treat infections in livestock, poultry, and fish. In aquaculture, it is particularly valuable for controlling bacterial diseases in fish, such as furunculosis and enteric redmouth disease. The chemical is often added to animal feed or water to ensure proper dosage and effective treatment. Its use helps to maintain animal health, prevent the spread of infections, and improve overall productivity in farming and aquaculture operations. However, its application is regulated to minimize the risk of antibiotic resistance and ensure safety in food-producing animals.