A Koi's metabolism functions best at temperatures above 70º F.  High protein foods are difficult to digest when the water falls below 65º F.  However, Koi still need sufficient carbohydrates for energy when water temperatures are low.  This is particularly true for Koi less than 1 year old.  Squash, bread, peas, citrus fruits and watermelon are good sources of carbohydrates.  Koi do not have a stomach.  Feed smaller quantities more frequently for better nutritional absorption.  Feed only as much as the fish will eat in about 3 to 5 minutes.  Koi pellets should be fresh and used within three months to prevent oxidation of the food

Water Temp in °(F)

Feeding Quantity

Food Type

less than 50

Do not feed Koi

Temps. at 50° F of more than one month may require supplemental feedings of low protein high carbohydrate.

50 - 55

2-3 times a week if Koi are hungry

High carbohydrate, low protein, laxative type foods. Wheat germ, Cheerios, squash, lettuce & brown bread.

55 - 59

4-5 times per week if Koi are hungry

Add low protein (25%) pellets along with vegetables. Increase quantities gradually as temp. increases.

59

Once per day six days a week

Low protein (25%) pellets along with high carbohydrate vegetables and fruit.

60 - 65

Once or twice per day everyday

Gradually increase protein in pellets (35%) and quantity of pellets. Vary diet with vegetables and fruits.

65 - 72

Once or twice per day

Bulk of diet should be 35% protein pellets.  Add fruits, vegetables and plankton for variety.

72 - 80

3-4 times a day

High protein pellets (35% to 40%) with color enhancers. Add plankton, vegetables, fruits and shrimp.