Goldfish possess genetic traits that allow them to swell up to four pounds—the size of a Chihuahua. Experts say that's why ...

One of the most persistent myths about goldfish is that they only grow to the size of their tank. While there's a grain of ...

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 ...

While your goldfish may look tiny now, without a tank limiting its size, the Fish and Wildlife Service says it can balloon into a "football-sized" invader. The agency says a single goldfish ...

On it website, the government agency explained that although goldfish in pet shop tanks may look harmless, "in the wild, they don't stay small." "Without a tank limiting their size, goldfish that ...

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 ...

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 ...

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 ...

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.