Once a simple food fish, koi have transformed into living jewels, with some fetching sky-high prices in the global luxury market. Here's how this happened. In the world of high-end pets, few creatures ...

For James Kinney, president of the Aloha Koi Appreciation Society, keeping a koi fish pond in ecological balance brings a sense of peace. "It’s a living art form," he said. "It’s the beauty and the ...

Sourcing and selling koi carp — some of the most expensive pet fish in the world — can be both a profitable business and an enjoyable pursuit. This is especially true for Tim Waddington, the owner of ...