Wild mandarin fish in the Yangtze River can't be eaten now, because fishing has been banned for 11 years. Now the price of mandarin fish in the market is 41-71 yuan/kg, which is more than four times higher than that of the "four big fish". For ordinary consumers, it is a luxury, and they can only have eye addiction at ordinary times, unless every year. The "expensive" of mandarin fish lies in the cost. Mandarin fish don't eat artificial feed, but live fry and dead fish don't eat it. I was born by the Yangtze River, and I was lucky enough to eat mandarin fish twice. Mandarin fish is not as valuable as the bigger it is, but the most valuable is about a catty. When it is too big, no one can afford it, so it can only be sold at a reduced price, and the wild mandarin fish resources are almost exhausted, so the price has been firm and will not fluctuate greatly.

Siniperca chuatsi culture must have a clean and hygienic water source and a wide water area. One mu of Siniperca chuatsi culture pond must be equipped with a 2 mu bait fish pond. Siniperca chuatsi has high requirements on water quality, and the water should circulate, and the bottom of the pond must be cleaned up in time. Siniperca chuatsi is a fierce animal in the Yangtze River. At the top of the biological chain, it feeds on small fish and shrimp. I bought mandarin fish twice, and after laparotomy, there were fish and shrimp in the digestive tract. At present, the survival rate of artificial culture is only 71%, and the domestication rate of artificial domestication and feeding feed is only 51%. About half of mandarin fish must be fed with mandarin fish and shrimp. Mandarin fish culture requires high water quality. Five aerators with 1.5 kW/hour are installed in a 111-mu culture pond, with water transparency of 41cm, PH value of 4-8, and dissolved oxygen of 4 mg/L.

(1) Before releasing Siniperca chuatsi fry, the pond must be cleaned and sunned three months in advance, and the whole pond should be disinfected with 311 kilograms of quicklime per mu;

(2) Install an aerator and pour water into the pond. When the water temperature reaches 18 degrees Celsius, throw in 15 million silver carp fry with a scale of 5-8 cm, and then throw in 2,111-5,111 silver carp fry, with silver carp and silver carp as bait;

(3) Put 15 million wheat shad fry per mu in the bait pond, which can be put in stages. When it is found that there are few fry in the bait pond, put the wheat shad fry in time;

(4) Check the water quality in the culture pond and the feeding activities of Siniperca chuatsi every day, salvage dead fish and shrimp, and increase oxygen in time, and catch wheat mud carp from the bait pond for feeding.

artificial culture of mandarin fish insists on patrolling the pond every day, changing water and increasing oxygen, and the artificial culture density is high, so the water circulation in the culture pond should flow. The "killer" of mandarin fish is virus infection, so it is necessary to regularly consume and sterilize the culture pond to improve the water quality. Virus infection will make mandarin fish culture "completely annihilated", so we must be careful and strive for perfection in culture management. The cost of mandarin fish culture is about one 21 yuan. Mandarin fish fry are put in April every year, and caught and listed after September. Mandarin fish are mostly sold to the catering industry, and the market is also after September.

(1) In the process of Siniperca chuatsi culture, sufficient bait fry must be prepared, and at the end of June-July, 15 million flowers and silver carp fry can be put into the Siniperca chuatsi culture pond, and 15 million wheat carp fry can also be put into the bait culture pond, so that Siniperca chuatsi cannot be hungry;

(2) Sprinkle and disinfect the whole pond with quicklime water once a month. With the growth of Siniperca chuatsi, the oxygen consumption also increases. During June-August, the aerator is turned on every morning to aerate for 4-6 hours. Immediately change water and increase oxygen when the pond is flooded at the bottom;

(3) Chinese mandarin fish can't be opportunistic and reluctant to pay the cost. Once, some farmers wanted to use feed instead of live fish and shrimp, and domesticated and put in feed from the time of putting in fry, but the domestication rate was only less than 51%, so they had to give up feeding. Chinese mandarin fish didn't eat artificial feed, and most of them sank to the bottom, which worsened the water quality.

(4) Siniperca chuatsi also has the habit of eating each other, so it is necessary to feed enough fry, which can be caught and fed in the bait pond, and the dead fish, shrimps and Siniperca chuatsi should not be eaten, so the bait must be fresh;

(5) It is necessary to ensure that there are enough bait fry in the bait pond, and the bait fish should be small miscellaneous fish, and the most suitable choice is wheat mud carp. Flowers and white lotus can only be put in the pond for mandarin fish to eat, and can also be used as "scavengers" to clean up plankton and microorganisms in the pond and purify the water quality.

A catty of mandarin fish is the most popular in the market, and the price is high. When mandarin fish grows to a catty, it must be caught and sold on the market. The "expensive" mandarin fish lies in the high cost of breeding, the difficulty in mastering the technology and the high risk. Many farms dare not invest in breeding. The output value of mandarin fish per mu is about 1.2 million yuan, and the net income is about 21,111 yuan. The culture technology of mandarin fish must be improved, and efforts should be made to domesticate and feed artificial feed to reduce the cost, so that ordinary people can afford it and return to the "people-friendly price". The artificial culture of Siniperca chuatsi is not long, and the Siniperca chuatsi is full of wildness. The artificial culture must be constantly summarized and perfected, and the culture is risky, so the investment must be cautious.