Koi fish are what you might call a happy accident. In the 1600s, Japanese carp farmers began noticing unusual color variations among the fish. "The popular koi fish of today are actually ...

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 ...

Almost £1 million worth of rare koi carp collected by the late Freddie Mercury have been accidentally killed by a gardener. The Queen star's 89 fish, each more than 2ft long, were worth about £ ...

Koi diplomacy is back with Japanese nishikigoi, or ornamental carp, set to return to the lucrative ... resume imports of these vibrantly colored fish, although the reason for the suspension ...

Koi herpesvirus (KHV ... and has killed fish at all sites, the Fish Health Inspectorate said. It affects all varieties of common and ornamental carp and can result in large-scale mortalities ...