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 ...

You might have a pet goldfish at home, but I bet you've never seen one quite like this before. Although the idea of a giant goldfish might sound cool, it's not actually good news. The US Fish and ...

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 ...

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.