as there name implies they have bristles on there body and the more you touch tem they get stuck in your skin and feel like a small burn. Not fun. Kind of like a jellyfish sting on your fingers. The human body will break them down but it will take time-solution use tweezers or something else.
the rock says.....
they'll sting ya, just soak your hand in some warm water and take a tweezer or pull them out. if you haven't touched them yet, please don't, it isn't pleasant
just touch one and you will see just how painful that it can be... then you will cry out dog goneit with a shout just how painful it can be ..... so go ahead and touch one and you will see!!!!!!!!!!!! good luck my friend...
just a small poem to lighten it up...I've been stung by a few myself when movin' around my rock... I now have a 6-line wrasse and he seems to be eating those guys up