Butterfly koi

In July 1977, the then Crown Prince Akihito visited the Saitama Prefectural Fisheries Experiment Station and suggested that there was a carp with a long fin in Indonesia (Cypirnus carpio var.

These were known in Japan as onagagoi or hire naga nishikigoi, or translated in English "long tail carp".

[3] The standard criteria used in these events has evolved over many years, and they are specifically tailored to rate the characteristics of koi.

Relationship of fin to body – The ratio of fin-to-body is an important scoring criteria in nishikigoi competitions.

They can be in pet, pond, and fish keeping supply stores or preferably, specialized koi breeders.