The answer is YES, guppies and Goldfish can coexist together. However, bigger goldfish have the capability of eating the smaller guppy fish.

Can guppies hurt goldfish?

No, it is best not to keep guppies and goldfish in the same aquarium. They prefer different temperatures, goldfish will grow large enough to eat guppies and guppies are known fin nippers and might damage the fins of your goldfish.

What fish can you not put with goldfish?

You'll want to avoid choosing tank mates that are aggressive or semi-aggressive, like African cichlids or Tiger Barbs and stick with friendly species instead. You'll also want to avoid putting territorial fish in a tank with goldfish, even bottom-dwelling fish that usually avoid the open areas goldfish prefer.