Koi Shows — How Champions Are Chosen
What a koi show is, size classes and entry, judging criteria in general terms, the All Japan Koi Show, other major shows, and how to read a champion record.
The full list sits in the frame below — it scrolls inside the frame so the rest of the page stays close.
Breeders and owners exhibit fish by variety and size class; judges rank them — the system in outline.Size Classes (Bu) & How Entry Works
From the smallest bu to the over-80 classes — how a fish finds its competitors.What Judges Look For
Body, quality and pattern — the three lenses, in the general terms judges and catalogues publish.The All Japan Koi Show
The national championship — its scale, its recent champions, and what winning it means.Young Koi Shows & Other Major Events
Wakagoi and national breeder shows — where tomorrow's champions are first seen.Reading Champion Records
How to read a results list — breeder, owner, variety, class and age — as a factual record.
Sources: Wikipedia (CC BY-SA — summary in our own words, credit only); All Japan Nishikigoi Promotion Association official; Ministry of Agriculture, Forestry and Fisheries (MAFF) and Finance Ministry trade statistics as published; Japanese Agricultural Standard (JAS) for nishikigoi variety names and definitions (2022); Niigata Prefecture, Ojiya City, Nagaoka City (Yamakoshi) and Nishikigoi no Sato official; Japan National Tourism Organization (JNTO) visitor statistics; USDA APHIS and Australian DAFF official import guidance. Checked 6 November 2026.