Goldfish possess genetic traits that allow them to swell up to four pounds—the size of a Chihuahua. Experts say that's why ...

Make a goldfish tank from brick and cement ...

One of the most persistent myths about goldfish is that they only grow to the size of their tank. While there's a grain of truth in this belief, it's rooted in a misunderstanding. The origins of ...

"From cute to brute," it captioned the snap. The official USFWS website explains that although goldfish in pet store tanks may look harmless, "in the wild, they don’t stay small." "Without a ...