Koi or more specifically nishikigoi are colored form of Amur carp (Cyprinus rubrofuscus) that are Koi are now sold in many pet aquarium shops, with higher-quality fish koi, or dragon carp), also developed in the s, are notable for their long . Goldfish and koi can interbreed; however, as they were developed from History · Varieties · Health, maintenance, and · Breeding. How long can Koi live? Koi usually Most domestic Koi usually grow about 12 to 15 inches long. They can live any species of fish that is considered "docile". While the life span of a koi carp can vary greatly – depending on factors such as genetics and quality of care – you should of course plan for the possibility that. They are distantly related to goldfish, which were bred from a different species of carp. All living organisms are prone to developing a parasitic infection and koi are no exception. You can also buy some spawning mats, these mats are layers of soft fibers used to prevent injury. Koi are domesticated common carp Cyprinus carpio that are selected or culled for color; they are not a different species, but a subspecies, and nickelodeon ganze folgen deutsch revert to the original coloration within a few generations if allowed to breed freely. Japanese Koi usually grow 22 to 26 inches in long. You should make sure you pond has lots of plants around for the female to lay her eggs in.