Observe the amount of time fish spend at the table or in the feedlot.  If it takes less than 2 hours for the fish to finish the feed after a certain amount of feed is put in (the normal feeding amount), it indicates that the feed is insufficient and some fish are not eaten or full, so it should be added appropriately.  If the feeding amount of each ten-day is constant and the feeding amount of each ten-day is the same, but the feeding amount is consumed by fish in less than 2 hours by the end of the ten-day, it indicates that the fish body has gained weight and the feed amount should be increased.  

When feeding with pellet feed, the feed has been finished, the fish are still swimming in the surface water for food, unwilling to sink into the "two-layer water", indicating that the fish are not full.  If fish have dispersed from the food table, food field, there are bait left, fish are more than full, the next time can reduce the amount as appropriate.  

The water surface is not calm, fish activities in the pool are frequent, check whether there are parasites harassment harm, or fish may be in a state of hunger.  In the breeding pond, flocks of young fish constantly swim around the pond crazily, which is a sign of lack of suitable bait and serious hunger, commonly known as "horse running disease".  

Regularly check the situation of breeding of fish, usually check once a month, in the density of livestock, with reasonable proportion, without disease, found that the growth of fish far from achieving a predetermined specifications, and size of individual difference, explain the lack of feeding fish class, often in a state of hunger or half hunger.  

Regularly check the situation of breeding of fish, usually check once a month, in the density of livestock, with reasonable proportion, without disease, found that the growth of fish far from achieving a predetermined specifications, and size of individual difference, explain the lack of feeding fish class, often in a state of hunger or half hunger.  

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