Coral Safe Fish To Eat Inverts?

[rastaangel]

My tank has become over run with snails, crabs, and all other kinds of inverts. And I want them all gone!!! I pick them out daily but they keep coming back and there driving me nuts, the snails get caught in my glass magnet and scratch it up and they all get trapped and die in my SPS resulting in spots dieing off...
So basiclly im looking for a coral safe, pretty fish that doesnt get super huge or eat my smaller fish, Anyone got any suggestions?