Tilapia in cage culture should be well raised and managed from four aspects.

The main results are as follows: 1. the choice of feed not only affects the growth rate of fish, but also affects the profit of fish culture. The principle of feed selection: palatable, fresh, comprehensive nutrition and reasonable price. It is appropriate to choose the expanded feed produced by feed manufacturers with good reputation and scale, and generally do not use sunken formula feed, which will be wasted due to the lack of food by fish.

2. Feeding rate and feeding times: fish weight less than 50 grams, daily feeding rate 4%-6%; individual weight 50-200 grams, daily feeding rate 3%-4%; individual weight 200 grams, daily feeding rate 2%-3%; individual weight more than 500 grams, daily feeding rate 1%-1.5%. Feed three times a day at 8:00, 12:00 and 18:00. In the production operation, the feeding amount should be determined according to objective factors such as water quality, weather and so on. 3. Feeding method the fish was domesticated and fed on the second day after the fish was put into the box, so that the fish became a regular feeding habit. When throwing and feeding, insist on being slow, fast and slow, how much less. In the process of feeding, sometimes due to the role of weather and water environment, fish have a strong appetite, at this time can not increase the amount of feeding at will, otherwise not only a waste of feed, and even lead to the occurrence of disease. It is not regularly fed with green fodder such as vegetable leaves. 4. Daily management of tilapia culture in cage is an important technical means to ensure the high yield and high efficiency of cage culture. The management work mainly includes: check the cage frequently, do a good job of escape prevention, wash the cage, disastrous weather and emergency measures and so on. We must pay close attention to the work of preventing flight, be on strict guard, and be vigilant at all times. Water rats, soft-shelled turtles and so on will bite the cage, causing fleeing fish. Therefore, adhere to the daily net inspection, if the inspection is not thorough, all previous efforts are likely to be wasted. Often listen to the weather forecast, encounter typhoons, storms, mountain torrents and other disastrous weather changes, should promptly pull the cage to the shelter, check whether the frame and anchor rope of the cage are strong, and increase cables to reinforce the cage. Hang the trash net upstream of the cage to prevent floating objects and miscellaneous wood from scratching the cage.