Koi Feeding Guide

A Koi's metabolism functions best at temperatures above 70° F. High protein foods are difficult to digest when the water falls below 65° 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. Never overfeed your fish! 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 3-5 minutes. Koi pellets should be fresh and used within three months to prevent oxidation of the food.

Water Temp. (°F.) Feeding Frequency Food Type
Less than 50ºF. Do not feed Koi. Temperatures at 50° F. of more than one month may require supplemental feedings of low protein and high carbohydrates.
50-55ºF 2-3 times a week if Koi are hungry. High carbohydrate, low protein, laxative type foods. Wheat germ, Cheerios®, squash, lettuce and brown bread.
55-59ºF 4-5 times per week if Koi are hungry. Add low protein (25%) pellets along with vegetables. Increase quantities gradually as temperature increases.
59ºF Once per day six days per week. Low protein (25%) pellets along with high carbohydrate vegetables and fruit.
60-65ºF Once per day every day. Gradually increase protein in pellets (35%) and quantity of pellets. Vary diet with vegetables and fruit.
65-72ºF Once or twice per day. Bulk of diet should be 35% protein pellets. Add fruits, vegetables, and plankton for variety.
72-80ºF 3 to 4 times per day. High protein pellets (35% to 40%) with color enhancers. Add plankton, vegetables, fruits, and shrimp.

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