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 ...

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 ...

Anything strike you as special about this fish here? Well, it's worth 1.8 million dollars. It won grand champion at the All Japan Koi Show in 2017, and is the most expensive koi fish ever sold. Koi ...

One is greeted by colorful koi fish swimming gracefully in the ponds when entering Jiangsu Qihong Ecological Agriculture Development Co., Ltd., in east China's Jiangsu Province. The fish are a feast ...

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) ...