For example, there are koi with light blue spots, ones with large red patches on their backs, or all-metallic gold. But the most winning fish often just boil down to these three varieties.

As the name implies, it's an outdoor pond populated by koi fish, a colorful, domesticated carp that adapts well to a variety of spaces. Originally domesticated in China, these beautiful fish endeared ...

Chinese breeders of "nishikigoi" carp displayed varieties of the multicolored ornamental fish at a recent competition in southern China. The breed, commonly known as "koi", are regarded as symbols of ...