Rainbow Trout in Japan

The fish

Japanese

ニジマス · nijimasu

Scientific name

Oncorhynchus mykiss

Typical size

25–60 cm (10–24 in)

Water

Freshwater

Across the year

The best month at any of the 5 places we have checked. Each place has its own window, and the season elsewhere in Japan may differ.

Where we have checked it

These are examples, not a complete list. Rainbow Trout is caught far more widely in Japan than the 5 waters below. We list a place only once we have worked out which rules apply there, so the absence of a water means we have not checked it — not that the fish is missing.

• Lake AkanHokkaido · FreshwaterMay, June, September and October are the prime months.
• Niseko mountain streamsHokkaido · FreshwaterMay, June, July and August are the prime months.
• Lake ChuzenjiTochigi · FreshwaterApril, May, October and November are the prime months.
• Lake AshiKanagawa · FreshwaterMarch, April and October are the prime months.
• Lake KawaguchiYamanashi · FreshwaterApril, May, October and November are the prime months.