It's hard to say, the difference in feeding is also related to time and the quality of eel fry. To give you a basic reference, if you raise it well, a cage of 6 square meters, put 20 kilograms of eel fry, feed 40 kilograms of feed and 40 kilograms of fish, can produce 50-60 kilograms of commercial eel. Monopterus albus feed is generally about 100 yuan a pack, 20 kg a pack.