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.

If you can no longer care for a live goldfish, the United States Fish & Wildlife Service recommends trying to find another ...

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 ...

A massive "Megalodon"-like goldfish caught last year in Pennsylvania has led to a new warning from the U.S. Fish and Wildlife Service-- don't let your pet fish loose in the wild. Last month, the ...

The goldfish can "turn lakes and waterways into murky messes, steal food from native fish and wreck water quality," the USFWS wrote. The USFWS shared a second pic in the comments of its post that ...

Goldfish, the USFWS warns, can grow to massive sizes in the wild, where they can “turn lakes and waterways into murky messes, steal food from native fish, and wreck water quality.” ...

The service said goldfish are an invasive species. "They can turn lakes and waterways into murky messes, steal food from native fish and wreck water quality," the post said. Officials wrote that ...