Better yet, let me try to explain to you, because the one in this sight's pic is not the same as in my book.
Big Longnose Butterflyfish=Forcipiger longirostris= Reef safe.
But the almost identicle,
Yellow Longnose Butterflyfish=Forcipiger flavissimus=not reef safe
And the 3rd, I doubt you have...
HTH