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Koi. Koi (鯉, English: / ˈkɔɪ /, Japanese: [koꜜi]), or more specifically nishikigoi (錦鯉, Japanese: [ɲiɕi̥kiꜜɡoi], literally " brocaded carp"), are colored varieties of carp (Cyprinus sp.) that are kept for decorative purposes in outdoor koi ponds or water gardens. Koi is an informal name for the colored variants of carp kept for ...
Koi pond. Koi ponds are ponds used for holding koi carp, usually as part of a garden. Koi ponds can be designed specifically to promote health and growth of the Nishikigoi or Japanese Ornamental Carp. Koi ponds or lakes are a traditional feature of Japanese gardens, but many hobbyists use special ponds in small locations, with no attempt to ...
The common carp was introduced from China to Japan, where selective breeding in the 1820s in the Niigata region resulted in koi. [59] In Japanese culture, koi are treated with affection, and seen as good luck. [60] They are popular in other parts of the world as outdoor pond fish. [61]
Fish farming. A fish farm on the coast of Euboea island, in South Euboean Gulf, Greece. Fish farming or pisciculture involves commercial breeding of fish, most often for food, in fish tanks or artificial enclosures such as fish ponds. It is a particular type of aquaculture, which is the controlled cultivation and harvesting of aquatic animals ...
Fish reproduction. A pair of bettas spawning under a bubble nest. Fish reproductive organs include testes and ovaries. In most species, gonads are paired organs of similar size, which can be partially or totally fused. [ 1 ] There may also be a range of secondary organs that increase reproductive fitness.
Eurasian carp. Painting by Ellen Edmonson. The Eurasian carp or European carp (Cyprinus carpio), widely known as the common carp, is a widespread freshwater fish of eutrophic waters in lakes and large rivers in Europe and Asia. [2][3] The native wild populations are considered vulnerable to extinction by the International Union for Conservation ...
Garden ponds are in some ways similar to freshwater aquaria, but are usually much larger and exposed to ambient weather. In the tropics, tropical fish can be kept in garden ponds. In the temperate zone, species such as goldfish, koi, and orfe work better. [7]
Butterfly koi, longfin koi, or dragon carp are a type of ornamental fish notable for their elongated finnage. The fish are a breed of the common carp, Cyprinus carpio, which includes numerous wild carp races as well as domesticated koi (nishikigoi). In July 1977, the then Crown Prince Akihito visited the Saitama Prefectural Fisheries Experiment ...