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

If you've ever heard the urban legend about released pet alligators growing to colossal sizes in sewer systems, you might be ...

The goldfish will also reproduce with the native common carp to create bigger hybrid species that are equally ... donating a fish to an aquarium or school, returning it to a pet store, and ...