| GERNERAL Division | Management of the association and the head office |
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| Publications and social services by Nishikigoi |
| General activities and finance, and other things |
| SHOW Division | Operation and advices for koi shows and competitions |
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| Works and advices for All Japan Show |
| INTERNATIONAL Division | Management of the overseas chapters, friendship clubs and their members |
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| Judge exchanges and arrangement to overseas koi shows |
| Promotion of Nishikigoi to the world |
| FISH KEEPING and RESEARCH Division | Research and study on Nishikigoi Keeping |
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| Guidance against fish diseases |
| JUDGING Division | Instruction of Nishikigoi appreciation and judging |
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| Holding judging seminars |
