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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.
Most aquarium fish are omnivores: you can feed them meat or plants, or both. These species â including goldfish, mollies and catfishâ also like eating flake food. If you have goldfish, look for a food formula made just for them. Only a few species of fish eat mostly meat.