How many catties can grass carp grow with Tongwei feed a year?

Generally, wild grass carp will grow to more than 2 kg in the first year, 5 kg in the third year and 20 kg in the 10 year.

Tongwei feed is generally only 2 years old, because food is rich in artificial feed nutrients, which can grow to about 10 kg a year, but the meat quality is far less good than that of wild meat.