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 ...

Despite their popularity, myths and misconceptions about goldfish abound. The most common myths are that goldfish have short-term memories, thrive in bowls, remain small, have little variety, and are ...

That might help explain why goldfish in healthy environments can reach the size of an American football, while your last goldfish wasn't much bigger than your index finger. Once you have a big ...

Goldfish may look small and cute in your home ... or 2 kilograms, about the size of an American football! These big fish are also big eaters, feeding on plants, insects, crustaceans, and other ...

The tiny, harmless-looking fish from the pet store won't stay 'cute' without a tank limiting their size. 'Goldfish that once fit in the palm of your hand can balloon into giant, football-sized ...

ERIE, Penn. (WKRC) — Pet store goldfish are not only surviving the harsh winter conditions of Lake Erie, but are thriving, officials said. The United States Fish and Wildlife Service posted a ...

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 ...

Thinking about letting your pet goldfish run wild and free in the Pennsylvania rivers and streams? The U.S. Fish and Wildlife Service (USFWS) would have you reconsider that idea. In a Feb. 25 post ...

March 3 (UPI) --The U.S. Fish and Wildlife service is reminding pet owners not to release their goldfish into waterways after researchers in Pennsylvania found a massive "megalodon." The USFWS ...