Now in order to get a beautiful, reddish-orange ... and is the most expensive koi fish ever sold. Koi may just look like an oversized goldfish, but they're not even remotely related.

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, even more ...

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 ...