Koi are actually a type of carp, and today they're some of the most expensive pet fish in the world. But why? Koi were originally raised in Japan in the 1700s when rice farmers first began ...

Did you know some species of pet fish can live as long, if not longer, than dogs and cats? Learn how this wonderful species ...

Koi fish have got a lot going for them. "[They are] not only a pet, but also art," says Taro Kodama, president of Kodama Koi Farm. "They are called living jewels — beautiful as one koi ...

Benzinga and Yahoo Finance LLC may earn commission or revenue on some items through the links below. A couple preparing to close on a new home in just a few days found themselves caught in an ...