Updated 28th January – See below

On 11th January 2019 the All Japan Nishikigoi Promotion Association (Shinkokai) Niigata Region released a statement detailing the occurrence of Koi Herpes Virus on 4 member farms during the later part of 2018.

The report, issued under the name of Mitsunori Isa, head of the Niigata Region of the Shinkokai, stated:

‘First of all, thank you very much for your cooperation and understanding of our activities.

We have been working with the governor’s guidance on preventing the occurrence of widespread disease in the Niigata region. In spite of our efforts, KHV was detected at some breeders in 2018 that unfortunately were shipped. On behalf of all Niigata breeders, we deeply apologize for any inconvenience this has caused you.

We would like to share the information of each breeder’s KHV situation. The information will be updated from time to time, so please keep checking the status.’

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The report goes on to detail the 4 farms that have had KHV positive results as:

  • Tazawa Koi Farm (Uonuma City)
  • N.N.B.C. (Nagaoka City)*
  • Hoshikin Koi Farm (Ojiya City)*
  • Yamacho Koi Farm (Nagaoka City) – more commonly known as Chogoro Koi Farm

You can see the full English language version of the report at – https://jnpa-niigata.com/khv/2018-khv-report-en.html – wherein full details of each farm’s circumstance and current position are detailed.

*The report was updated on 15th and 16th January 2019 to confirm negative tests received for N.N.B.C. and Hoshikin Koi Farm, be sure to check the report above for the latest position.

The fact that at least one positive case occurred really shouldn’t come as a surprise, after all, several cases were picked up in spring 2018 shipments to the USA.  I wrote about these in august in this article – http://nishikigoi.life/2018/08/23/khv-protect-yourself/.  In the same article I wrote about the importance of dealer quarantine, and the place that heat ramping plays in that process.  KHV has been identified by 2 UK dealers in autumn 2018 shipments by doing exactly that, infected Koi which would otherwise potentially have been passed onto customers to sit like a ticking time bomb in their ponds, possibly to break out in the summer wiping out complete collections at the same time.  I personally lost a Koi which was among one of those cases identified, my choice to source it through a dealer who heat ramped and vigorously quarantined was no coincidence.  The dealers loss is far greater than mine.

The openness showed by the Shinkokai on this occasion is incredibly refreshing to see and a definite step in the right direction for controlling the spread of KHV.  In addition the openness of the dealers in the UK affected by the outbreaks in the UK has to be applauded.  What is unfortunate is that the current system in Japan allowed Koi to leave before sufficient efficient testing had been done.  I wonder in the future whether we will see a shift in seasonal buying times?  Perhaps there needs to be a period of controlled quarantine and testing more stringently applied in Japan before fish are shipped?

The Shinkokai report finishes with; ‘To offer healthy koi to our customers and hobbyists, all Niigata breeders are committed to enact a stricter inspection system and protocol to ensure health and safety of Nishikigoi.  To achieve our goal, we are forming the ‘Nishikigoi Guideline Committee’ that will formalize the protocols in preventing spread of fisheries diseases.  Thank you for your understanding as we work to ensure Nishikigoi’s future.’

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As a final point, one thing that does nothing to help anyone in these situations is rumours.  At least one name was implicated in rumours as having KHV.  Today Masato Hoshino of Koda Koi Farm has understandably very proudly posted a copy of the results confirming Koda Koi Farm tested negative for KHV.

Koda Koi Farm's negative test result

Koda Koi Farm’s negative test result


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