butterfly koi fish has a long fin koi fish they are also called dragon carp.
They have elongated finnage the pectoral, caudal and pelvic fins.
They are high breed from the common carp, cyprinus carpio including wide varieties of wild carp races with a domesticated koi (” Nishikigoi”)
butterfly koi fish was breed in the mid-20th century as a result of an effort to improve the hardiness of traditional koi fish.
Butterfly koi fish are breed by Japanese breeders who interbred the wild Indonesian longfin river carp with traditional koi fish.
The resulting fish had longer fins, long barbells, pompom nostrils, and were hardier than koi fish.
These were known in Japan as “onagaoi” or “hire naga goi”, or translated in English “long tail carp”.
It was Randy LeFever, the son of Wyatt LeFever, a noted koi fish breeder was credited with suggesting they looked like butterflies, a trait for which the breed is named.
They are also sometimes referred to as Dragon Koi fish.
For clarification, the word koi is wholly inaccurate for describing these fish;
Koi are, as dictated by the Japanese breeders, Nishikigoi,
butterfly koi fish have long-finned carp are Hirenagagoi.
The word koi has been given to these fish to increase their resale value and popularity in garden centres and the like
Conformation – The ideal shape of a koi has been set by tradition to be generously oval.
By contrast, butterfly koi fish are naturally more slender.
This difference is amplified by the fact that traditional koi judging is done from a top-down viewing angle.
Relationship of fin to body – The ratio of fin-to-body is an important scoring criteria in nishikigoi competitions.
By design, longfin embody a ratio that exceeds the standards applied to nishikigoi by 500 to 1000 percent.
butterfly koi types Pattern differences – Great energy has been given to developing butterfly koi versions of
traditional koi patterns, (e.g. kohaku, sanke, showa, utsuri and ogon).
Butterfly koi, however, exhibit these patterns in a slightly different way.
How big do butterfly koi grow in a year?
Their barbels (whiskers) even grow long and can fork into elaborate designs.
Butterfly koi seem to lack some of the body size of regular koi,
but the overall fish can run as long as 36 to 40 inches in the right pond with plenty of food.
They are graceful and pleasant to watch swim.
How long does a butterfly koi live?
The short answer is they can live over 200 years.
The oldest known Koi was Hanako who lived to be 226 years.
But the reality is most Koi fish do not live anywhere close to that long.