hello99,
Regarding swordfish, a lot of prominent authorities have permitted it including Rabbi Eliezer Silver z’tz’l and Rabbi Isser Unterman z’tz’l. The OU had a nice presentation on the issues a few years ago that includes actual photographs of kosher swordfish in Italy taken very recently. You can view the entire presentation at ouradio.org by searching on “OU Kosher Swordfish” and scrolling down to “The Three Fishes Part II: Swordfish”.