Japan exported about $600 million worth of aquatic products to China in 2022, making it the biggest market for Japanese exports, with Hong Kong second. Sales to China and Hong Kong accounted for 42% of all Japanese aquatic exports in 2022, according to government data.
I know this is a political move by China, the water is (probably) fine. I also know the loss of export is not great for Japan.
But I hope this means there is a little less intensive fishing going on.