Using Biological control, First studies the aquaculture food chain and then identify parasites found in aqua then identify the biological control of those predators and raring of these natural predators in the aqua culture.
Control of external parasites usually revolves around the use of insecticides. These usually are a pyrethrin or an organophosphate. Strategies or combinations of strategies for delivery include: dust bags, back-rubbers (oilers), animal sprays, pour-ons, and insecticide impregnated ear tags. Because most parasites that infect fish are microscopic, it is necessary to view diagnostic samples under a light microscope. Skin scrapings and gill biopsies can detect external parasites. There are 2 tiers of recommended precautions to prevent the spread of infections in healthcare settings: Standard Precautions and Transmission-Based Precautions. Prevention of fish disease is accomplished through good water quality management, nutrition and sanitation. Without this foundation it is impossible to prevent outbreaks of opportunistic diseases. The fish is constantly bathed in potential pathogens, including bacteria, fungi, and parasites.