Good water quality involves adequate oxygen levels of 5 ppm or more, maintaining appropriate pH and temperature for the species cultured, and preventing the accumulation of wastes. Poor water quality is the most common stressor of cultured fish and will precede many disease outbreaks. Feed a high quality diet that meets the nutritional needs of the species being cultured. Fish confined to cages have no access to natural pond food. They must be fed a complete diet in order to get all their nutritional requirements.
Proper sanitation is also good management.
Wastes that accumulates below the cage is an excellent medium for reproduction of fungal, bacterial, and protozoal agents. Ensure that the cage has adequate space below the cage as well as flow through. This will allow wastes from accumulating below the cage. Disinfection of containers and equipment between groups of fish will minimize transmission of disease. Signs of a Sick Fish Fish don't feed.