Reef nutrition

Setosa Killer

OK which one of these A-holes in my tank chewed on my Setosa last night. I'm thinking it was the long spined urchin. I doubt it was the clowns, wrasse, dartfish, snail, or hermits.
 
I'd vote longspine, they will often graze a path over encrusting corals as they move from one place to another, if the coral wasn't too big it could easily consume it..
 
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