The ornamental fish breed retails between $20 and $20,000 on average per fish. Local company Ohio Koi's home to thousands of them.

Here’s everything you need to know to catch the Butterfly Koi and add this elegant fish to your Heartopia collection.

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 ...

Nishikigoi, better known as koi fish, are a well-known variety of the common carp. They are bright red and white and revered for their vibrance and grace. Even other animals, including their predators ...