Do koi fish eat peanut butter?

Koi fish are omnivorous and will eat a variety of things, but they should not be fed peanut butter. Peanut butter is high in fat and calories, and can be harmful to koi fish. It can cause digestive problems and lead to obesity. Additionally, peanut butter can clog the gills of koi fish and make it difficult for them to breathe. If you want to feed your koi fish a treat, there are many other healthier options available, such as vegetables, fruits, and fish flakes.