How much do I feed them?
  Little and often is the general rule. If you are interested in hand feeding your fish, they will become bolder and tamer when they have worked up an appetite. If, after ten minutes or so, there is uneaten food still floating on the pond, you should take it out. After a few times you will be able to judge about how much to feed at a time. Koi can go for 10 or more days without food without harm. They will eat almost anything but we feed them pellets that are specially made for Koi. These pellets come in different sizes and varieties. Koi can also be fed dried or fresh shrimp, lettuce cooked rice or cooked oats.