I recently heard from Rav Gronish that the other G’dolim were still looking into it and had not come to a conclusion at least about one particular fish from China or some similar “wild” area.
Anyway I think I heard him say thay all agree that farm raised fish or anything with a a good hescher is no problem.
I could be wrong so no one should rely on what I post here I’m just putting out ideas for anyone who wants to, to check up on.