Mandarin fish, also known as mandarin fish, mandarin fish and so on. , one of the four rare freshwater fish in China, belongs to carnivorous fish, so it mainly eats some small fish and shrimp in the natural environment, and the domesticated fry can eat artificial pellet feed under artificial cultivation. Siniperca chuatsi is a famous specialty fish in Guangxi, which is famous for its tender, spineless and delicious meat. The largest is 3~4 kg, which is the most popular in the general market. This fish is a benthic fish, which requires high water quality. It likes to inhabit the bottom of sandy riverbed with fast flowing water and clear water quality, and mainly feeds on small fish and shrimp.

All non-toxic plant organic matter can be used as earthworm feed after fermentation and decomposition. Crop straws or coarse organic garbage should be chopped, and the garbage should be classified and screened, and metallic glass, plastic, masonry and slag should be removed, and then crushed; Livestock manure and sawdust can be fermented directly without treatment. Mix and stir the earthworm cocoons over 5 square meters, then pile them into a row with a thickness of 20 cm, a width of 35 cm and an infinite length, and cover the pile with a layer of new manure with a thickness of 15 cm. The earthworm cocoons can completely hatch in about 20 days. At this time, the density of the incubation pile is very high, so divide an incubation pile into three pieces, and then add three times the amount of new manure to each piece.

Siniperca chuatsi mainly uses vision and lateral lines that are sensitive to sports stimuli, and is insensitive to chemical stimuli of food. Therefore, mandarin fish generally do not eat static food, and live bait is the main food for life. Under the condition of artificial feeding, the escape ability of bait fish is generally reduced because of the small water body.

Natural spawning still needs special care, responsible for observing the dynamics of parent fish and keeping the environment quiet. After the parent fish of Siniperca chuatsi is injected with oxytocin, the spawning pool or spawning ring remains in a microflow state. If the current is too fast, the parent fish will swim against the water surface, consuming a lot of physical strength and adversely affecting the parent fish. The fertilized eggs of Siniperca chuatsi can be hatched by running water in the incubator or loop. Mandarin fish eggs are semi-floating eggs. When hatching, it is required that the flow rate and flow rate of water should be greater than that of the four major fish eggs, the water quality should be fresh, and the dissolved oxygen should be above 6 mg/L.