This book contains a brief history of koi with beautiful quality photographs.
Concise information in both Japanese and English.
This most recent publication from the AJNPA makes a useful addition to the reference library for the serious koi hobbyist.
Dave Broscombe –
I have been using the Nishikigoi manual for fish health issues for a goodly number of years now its written I both Japanese and English there is information inside that the author uses that isnt that well know about in the west, its one of my go to books if I need it
I personally recommend you buy and put this book in your own library it will come in very useful indeed