After the hot summer comes autumn. In Japan, the term "autumn of appetite" is used to describe the time of year when many different types of fruit and produce are delicious. Fish also work up an appetite ahead of the spawning season. Rough eating. This is also a good time to fish with streamers, as the fish eat so many baby fish that they can no longer be swallowed.
Fishing is banned on 20 September in Gunma Prefecture and at the end of September in the mountain streams of Nagano Prefecture to protect spawning fish.
From October onwards, fishing is mainly in the larger main streams. Spey casting is the main method of targeting rainbow trout and brown trout.