Generally speaking, eel fry can be sold as commercial eels after 5-6 months of cultivation. If the technology is good, it can be cultivated half a month to one month in advance, and each eel fry can grow to150-250g.

Seedling raising is the key to Monopterus albus culture. Free-range eels require good health, active swimming, no disease or disability, and no limit to size. Because eels bully the small, bully the weak and bite each other without food, the specifications of eels raised in the same pond should be the same. The number of seeds put in depends on the size of the specification. Generally, the tail weight is about 50 grams, and each square meter is sown 160 grains. The tail weighs about 25 grams, and 250 seeds are sown per square meter; The tail weight is about 15g, and 450 ~ 500 tails are planted per square meter. Generally, after 4-6 months of cultivation, each Monopterus albus seedling can grow to150-250g.