1. Reasonable breeding. Mandarin fish feed on live bait. In order to ensure the normal breeding density of mandarin fish, a certain number of forage fish need to be raised, which will easily cause the pond to carry too much fish, and the feces and residual bait will also be too large. Therefore, during the production process, a certain number of silver carp and silver carp can be properly raised as filter-feeding fish to maintain the normal material and energy circulation in the pond and provide a good water quality environment for the mandarin fish to grow healthily.

2. Reasonable stocking density. At present, mandarin fish farming methods in Jiangsu, Zhejiang and Guangdong areas mostly adopt the method of monoculture in ponds. In order to improve economic benefits, some farmers often adopt high-density farming, which increases the density of forage fish, increases the load of breeding ponds, and increases metabolites. The accumulation of a large amount of harmful substances such as ammonia nitrogen leads to the deterioration of the pond water environment and harms the health of mandarin fish. Generally, mandarin fish with a size of about 3cm are stocked at a density of 1.5-20.25 million fish/hm2. Excessive stocking density will increase the risk of viral diseases in mandarin fish.

3. Master oxygenation techniques. It is necessary to flexibly increase oxygen according to different climates, different places, different times, and different situations. Pay more attention to increasing oxygen under the following circumstances.

4. Medication contraindications. Long-term drug abuse in breeding ponds will cause white liver symptoms in mandarin fish. Mandarin fish are very sensitive to a large number of drugs, especially heavy metal salts, halogen chemical disinfectants, organophosphorus pesticides, etc.