Carp are a large group of fish originally found in Central Europe and Asia. Various carp species were originally domesticated in China, where they were used as food fish. Carp are See more

The koi are a group of breeds produced by artificial selection primarily from black carp called nogoi (野鯉, lit.'wild carp') or magoi (真鯉, lit.'true carp'), which inhabit lakes, ponds, and rivers in Japan. The black carp refers to the Eurasian carp (Cyprinus carpio), which was … See more

Goldfish (Carassius auratus) were developed in China more than a thousand years ago by selectively breeding colored varieties; by the Song dynasty (960–1279), yellow, … See more

When koi naturally breed on their own they tend to spawn in the spring and summer seasons. The male will start following the female, swimming right behind her and nudging her. After the female koi releases her eggs they sink to the bottom of the pond and stay … See more

The words "koi" and "nishikigoi" come from the Japanese words 鯉 (carp), and 錦鯉 (brocaded carp), respectively. In Japanese, "koi" is a See more

According to Zen Nippon Airinkai, a group that leads the breeding and dissemination of koi in Japan, there are more than 100 varieties of koi … See more

The Amur carp is a hardy fish, and koi retain that durability. Koi are coldwater fish, but benefit from being kept in the 15–25 °C (59–77 °F) range, and do not react well to long, … See more