Koi Food: What Do Koi Fish Eat?
Koi fish are omnivores with a pretty strong digestive system. So, Koi will eat just about any natural food that you give them as long as they’re small enough to swallow. In the wild, Koi fish eat algae, insects that land on the water’s surface, leaves and other plant debris, and even animal feces. In captivity, you can feed them premium Koi food.
They will eat fruits and vegetables, as well as carbohydrate-rich foods like cereal, bits of bread, and rice. They will even eat some types of small protein, such as shrimp or cut-up pieces of chicken.
Ultimately, just like people, Koi need a balanced diet of carbohydrates and proteins with a little fat.
If you’re feeding your Koi multiple times per day, you can mix up which meals are rich in carbohydrates and which are rich in protein. Or, if you get a standardized food, it will have enough of both for your fish.