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 ...

The U.S. Fish and Wildlife Service announced on Feb. 25 that they discovered a massive goldfish — called a 'megalodon' — in a Pennsylvania waterway, which can create an 'invasive problem that can last ...

(WJW) — Lake Erie looks like a frozen tundra, but beneath all of that ice goldfish are not only surviving, they may be thriving and growing to massive sizes. Biologists with the U.S. Fish and ...

Something fishy is going on. A pet store goldfish went from “cute to brute” after it was found in a Pennsylvania waterway – with experts now warning against dumping unwanted fish into ponds ...

"One goldfish might not seem like a big deal, but they multiply fast," the USFWS said. "Goldfish spawn several times a season, and because they have no natural predators in most North American ...

Officials wrote that goldfish may start out small, but they can become a big problem very quickly. "One goldfish might not seem like a big deal, but they multiply fast," the USFWS said.

All of our parks have non-native species dumped into them that don’t belong there and it causes us big problems,” Harper explained. The HOA calls the goldfish a nuisance more than anything.