Introducing small clown into tang territory

[fishoholic]

Clownfish are different enough from tangs and angels that IME you shouldn't have any issues. How big is your tank? As long as it's a decent size I can't see it being a problem.

Edit: I saw on your link that you have a 65g, you should be fine adding a clownfish. However a 65g is a bit small for a tang, if you want to keep the tang you should upgrade your tank size to at least a 90g.