Goldfish possess genetic traits that allow them to swell up to four pounds—the size of a Chihuahua. Experts say that's why you shouldn't release them into the wild.

The USFWS asks goldfish owners who can no longer keep their pets to rehome them or return them to a pet store — or even ...

Just recently, USFWS posted a picture on social media of an extremely large goldfish they say was found ... and waterways into murky messes, steal food from native fish, and wreck water quality ...

A truly wild, and extra-large, discovery was recently ... U.S. Fish and Wildlife Service said. As goldfish continue to grow, officials say they can wreak havoc on the habitat, creating murky water, ...