How to Keep Koi Healthy

The koi, also known as "nishikigoi," is considered Japan's national fish. With proper care and planning, this hearty breed usually enjoys good health, often living for 25 to 35 years or more.

Things You'll Need

  • Pond Filters
  • Pond Kits
  • Pond Liners
  • Lettuce
  • Koi Pellets
  • Koi Fish
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Instructions

    • 1

      Buy koi pellets to feed your fish. Other foods they can eat include shrimp (fresh or dried), lettuce and cooked rice.

    • 2

      Feed your fish one to two times a day, depending on the season. (Once a day during the winter, twice during the summer.)

    • 3

      Be sure to keep the water aerated and filtered at all times.

    • 4

      Avoid sudden temperature changes in the water whenever possible.

    • 5

      Remove any debris from the floor of your pond.

    • 6

      Use a chloramine remover if you add tap water to the pond.

    • 7

      Clean your filter two times a year, even if the water looks clear.

    • 8

      Take care not to strip the protective slime from your fish if you handle them. This coating helps them resist fungus and bacteria.

    • 9

      Change water in the pond gradually to avoid sudden temperature changes.

    • 10

      Remember that as koi grow, they will need more room and more oxygen. In anticipation of this, try not to overfill the pond with too many fish.