This is the from the company that imported them into the US and successfully bred them here.
http://www.blueridgekoi.com/the-butterfly-koi-story/
Sorry what was I thinking I meant blueridge not blackwater must be colour blind
There is claim and counter claim over these fish I wonder if
@Meyer Jordan or
@koiguy1969 could help solve the origins of these koi .
In Newzealand these feral koi are pest so I cant see another country make the same mistake as they did over koi .
Australia too have banned them in all but two states , not because they have turned feral but because they are inundated with common wild carp , it may well be because they have a bann on importing koi into Australia that the two states that allow them may have the only KHV free koi left in the world [perhaps in Newzeland too in their feral koi population nobody hasd bothered to test them to the best of my knowledge].
However the Austrailian koi because of this bann are much smaller than the jumbo koi that the rest of the world have and the silly sods want to introduce JHV to the wild population [if you think about it , if many of our koi have latent KHV just waiting for the right stressor to comealong and activate it then Australia may be sitting on a potential pot of gold ].
Even yours and my koi may have latent KHV it happeened to a member of our club this year and they havent added a koi in 10 years which has us all very worried because at that time we used to get our koi from a trusted dealership in Yeovil in Somerset if ithe infected fish where bought their it bodes in for the lot of us .
But I digress we'll have to look into this in far greater detail to find out the origins of these butterflys
Dave