Only butterfly that is reef safe is the "big long nose". There is a very similar fish the "long Nose" but that one is not. Be careful to differentiate the two. Very similar, major differences are:
Pecular is more square cut on the "good" one
Underbelly has black dots on the "good" one.
Not all LFS
staff is aware there is even a difference. I have one on order and in determining if the one they (LFS
) had was the one I needed or not. I checked some reference information with them specific to this species. HTH