Now in order to get a beautiful, reddish-orange pattern like ... 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 carp are one of the most iconic ornamental fish in the world. Originally hailing from Japan, these beautiful fish have amazingly patterned bodies. There are many varieties–– and some of them are ...

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 ...

Explore an infinite number of procedurally generated koi patterns by crossbreeding your fish, and discover new mutations as you go along. Create beautiful koi through selective breeding ...