This article has now been updated. Please use the final version.
The effects of the COVID-19 pandemic on the Japanese fresh seafood retail market and the typology of differences by fish type: an empirical investigation using a four-quadrant matrix
Nippon Suisan Gakkaishi is an official journal of the Japanese Society of Fisheries Science written in Japanese only. The society publishes an English journal, Fisheries Science, as well, which accepts submissions from non-members of the society over the world. Detailed information is available in http://jsfs.jp/en/journals/fisheries-science.