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.

Originally domesticated in China, these beautiful fish endeared themselves within Japanese culture. Rice farmers in Japan began keeping and breeding them in the 19th century. With more than 100 types ...

Rayfield said they relocated the fish to Will Rogers Gardens, and now the large koi is among his fishy friends, easy for the public to enjoy. Rayfield said the koi is not an invasive species, but they ...

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 ...