Raising the bright orange or red koi, an ornamental fish that's both beautiful and valuable, requires careful consideration and unique resources in order to create a profitable business. The key is ...

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 ...

A dozen koi fish poke their faces up to the pond’s surface, hoping for a bite to eat. They’re smarter and more social than most would give them credit for, and they recognize horticulturists Mark ...

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 ...

The 31 koi donated by Joseph Zuritsky are already living in the pond at the Japanese House and Garden. More will be introduced in May, when the water is warmer. (Emma Lee/WHYY) Joseph Zuritsky (right) ...