It may shock some people to learn that goldfish can live twice as long as a dog. They’re just one of several fish species ...

Koi aren't lightweights either; they typically tip the scales around 35 pounds (16 kg), and experts advise filling a pond ...

A fish was finally rescued from a backyard pond after the sturgeon grew to be nearly 6-feet long from its original size of ...

There are regular competitions to name the top koi. Judges and buyers pay attention to how healthy its skin looks, its size and body shape, and how gracefully the fish moves in the water.