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In the wild, goldfish eat crustaceans, plants, insects and will sometimes even eat smaller fish. While you obviously canât match their natural diet exactly, you should try to feed your goldfish food that is similar to what they would eat in the wild.
What To Feed Your Goldfish? When asking what do goldfish eat, itâs always helpful to start by looking at them in their natural habitat. What is the environment like? What sort of food would they find there? In the wild, these omnivores will eat pretty much anything that doesnât put up a fight; insects, plants, zooplankton, snails, crustaceans, etc.