The price of finished fish cultured in grass is much higher than that cultured in feed, but the growth rate of fish cultured in feed is slow, and it takes 1 year and more than two years to grow from 200g to 4 kg. Moreover, feeding a lot of forage will cause water pollution and fish will easily get sick! If feed is fed, the general breeding cycle is less than one year. From the perspective of return on investment, feed is more worthwhile!