Nijikawa Koi Food

Nijikawa koi food pairs Japanese koi keeping know how with feed science from EWOS Canada, one of the most advanced fish feed manufacturers in the world. Developed and tested at top koi farms, it is a premium diet trusted by serious hobbyists and dealers alike.

Shop Four Seasons for daily feeding, Growth for warm water size, Color Genesis for vibrant pattern development and Professional, a high protein sinking pellet for competition conditioning. Every bag ships fresh the same day.

Compare across brands in all koi food, or shop by goal: staple, growth, color enhancing and wheat germ.

When to feed what: a temperature guide

Koi feed by water temperature, not by the calendar. Here's the simple version.

Spring50–65°F
Wheat germ

Koi are waking up. Start slow with easy-to-digest wheat-germ food as metabolism returns.

Feed once a day or less

Summer65–85°F
Growth + color

Peak appetite and growth. High-protein growth food, plus color food for show fish.

Feed 2–4× a day

Fall50–65°F
Wheat germ

Wind down. Switch back to wheat germ and taper frequency as the water cools.

Feed once a day → less

WinterBelow 50°F
Stop feeding

Koi go dormant and can't digest food. Stop feeding entirely until spring warm-up.

Do not feed

The one rule never to break: never feed high-protein growth or color food in cold water (below ~60°F). Koi can't digest it, and undigested food in the gut is a serious health risk. When in doubt, feed less, or wheat germ only.

Shop koi food by goal

Pick a goal to jump to the right formulas. For the full feeding guide, brand comparison and FAQ, browse the complete koi food collection.

Everyday Staple Most of the year Balanced daily nutrition to keep healthy koi thriving. Your year-round default. Shop these Build Size & Growth Summer · warm water High-protein formulas for young, growing koi when water is above ~65°F. Shop these Color & Show Warm season Spirulina & astaxanthin to deepen reds, whites and sumi for show-quality koi. Shop these Cold-Water (Wheat Germ) Spring & Fall Easy-to-digest wheat-germ diets for 50–65°F, when koi metabolism slows down. Shop these
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