Koi are omnivorous fish, can be leftovers, leftovers, fruit leather, etc., adding about 10% of animal offal, Fusiliers, maggots, nymphs, earthworms and other animal feed mixed and crushed to make a mixed feed; soybean cake, vegetable cake, breadcrumbs, fish worms, water earthworms, turnip weeds, duckweed, crab, clams, etc. can be used as bait. The amount and proportion depends on the size of the fish. Live snail can be slightly more put some, because it can be left in the water after eating leftover nibble algae and other debris attached to the bottom and walls of the water, there is a role in cleaning the water quality, is very good bait.

How much feed you put in is the key to raising good koi. If the overfeeding caused by the fish can not eat, not only will cause waste, but also cause the residual feed decay, spoil the water quality, not only beautiful, but also affect the survival of the fish. Fish pond water quality should be tender green and fresh, every day when touring the pool should be fished out in a timely manner leftover bait residue, high water temperature in summer every 2-3 days to change the water 1 time, spring and fall 4 days - 5 days to change the water 1 time, the amount of water for the original pool 1/3-1/2.

Koi's appetite is strong, mainly depends on the water column. Whether the environment is comfortable. Spring and fall season water temperature is suitable, can be sufficient to feed, summer and winter season when the water temperature is higher than 30 ℃ or lower than 7 ℃ when the amount of bait should be reduced as appropriate, generally each feeding to 15-30 minutes to finish eating is appropriate, the daily feeding amount of 5% -6% of the weight of the fish. In summer, generally 6 a.m.-7 a.m. and 15 p.m.-16 p.m. each fed once, spring and fall 7 a.m.-8 a.m. and 14 p.m.-15 p.m. each fed once, winter 13 p.m.-14 p.m. fed once can be.