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

Nicknamed "The Carrot," the goldfish was caught in the same French ... by Jason Cowler when it was a guppy. "We put The Carrot in about 20 years ago as something different for the customers ...

A properly dressed male guppy, with its gaudy blue spots and brilliant splashes of orange, can't help but stand out. But for a fish that spends its life swimming among predators, it seems that ...