Add Yahoo as a preferred source to see more of our stories on Google. In Northern Michigan, the Glen Lake Association recently hired bowfishers to remove invasive koi fish from the lake — and not a ...

Because a single female can lay as many as 400,000 eggs in one breeding cycle.

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 ...

Koi or goldfish can enhance a pond’s natural beauty.

Koi fish are colorful patterned common carp that are now celebrated in annual koi shows and kept in ponds all over the world. Some are worth millions.