I had a blue spot he liked to nip the tips . But the hawaiian white spot didnt bother a thing in my reef had her for long time the only issue is she glued her mouth shut a few times thought super glue on my frags was food i saved her few times but last time she ended up loseing her teeth with the glue and just couldnt eat right poor thing. Will get another definitly fun haveing a puffer in the reefHey how is that bluespot puffer doing in your reef? I've been considering a small puffer in my 30 gallon SPS tank but wasn't sure how he'd do with coral.