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 ...

It is the dream of many anglers growing up to own their own lake or fishery as they get older, but unfortunately very few ...

"Trump dump: president throws entire box of fish food into precious koi carp pond," the headline read. A subhead continued: "While his host, Japan's prime minister Shinzo Abe, spoons small amounts ...

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 £ ...

The 1,151 carp streamers -- the figure being a play on the Japanese phrase "ii koi" meaning good carp -- are hung along an approximately 600-meter stretch between the Tokiwa and Uzumagawa bridges ...