Planning a Koi Trip in Japan

How to combine Ojiya and Yamakoshi, a public facility, and a show-season visit into one workable journey.

Start with the map. The Niigata cluster — Ojiya's Nishikigoi no Sato and the Yamakoshi terraced ponds — sits about two hours from Tokyo by Joetsu Shinkansen to Nagaoka or Uraza-area access points, then local transport. It is the only place where the fish, the birthplace landscape and a major public collection meet in one day.

Add a season. Shows peak in winter (the All Japan show is a January event in Tokyo) with young-koi and regional shows in spring and autumn; the Niigata harvest season in autumn, when ponds are pulled and fish are sorted, is the producing region's own spectacle.

Finish with etiquette: facilities set their own photography and feeding rules, breeder visits are by arrangement rather than walk-in sightseeing, and the regions hub in this guide gathers the confirmed facility facts — hours, fees and access — each marked with its check date.

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.