ok, I thought it was cute when I had my hand in the tank last week to re-secure the powerhead, the suction cups had detached from the wall.... the clowns, out of everyone would start on one side of the tank, torpedo in and smash against my wrist. I never thought they could be such little buggers. This week, I was adjusting the sand a little, fixing a few things here and there, moving some shells around for the crabs when "OUCH!!", felt like that sucker bit me..... and then I watched them racing at me and felt it again... twice!!! I decided it was the end of playing in the water..... went to wash my hands off..... and there was 2 little cuts that I could swear was the point of impact from these little vicious things.They were tiny, but bites nonetheless.... who would think your typical "nemo" really DOES have an attitude 