Good Koi colors are uniform and balanced, Weaver said. For instance a dark gray fish with a large red splotch on the top of its head would be considered quite a catch for its rare marking.

Koi carp are one of the most iconic ornamental fish in the world. Originally hailing from Japan, these beautiful fish have amazingly patterned bodies. There are many varieties–– and some of them are ...

Toward the end, when 10 or 20 would die each day from the mysterious herpes disease, it was the fish known as Lips that twisted park ranger Penny Lee’s heart. A stately blue-gray koi that had ...

A koi fish seller says business is booming, thanks to his careful attention to detail. He sometimes visits 20 breeders a day to source fish that can sell for thousands.