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

The USFWS asks goldfish owners who can no longer keep their pets to rehome them or return them to a pet store — or even consider reaching out to a local aquarium or fish rescue group for help — rather ...

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 ...