Beaver, armadillo, alligator and capybara are all also fish according to the Catholic church.

https://www.theadvertiser.com/story/news/local/2023/02/20/whats-seafood-for-lent-alligator-beaver-and-armadillo-make-the-cut/69922902007/

So yeah, Jews definitely don’t have the monopoly on this stuff.