someone with more info will need to chime in here but as far as your current situation your fine. I have handled zoas and palys before bare handed when I wasn't thinking although most of the time I wear gloves, in the end unless they squirt or you physically damage them you probably don't need to worry.
That said, with this toxin all precautions should be followed, especially if you ever decide to frag a zoa or paly colony, gloves, protective glases and either keeping your mouth shut or a mask should be standard wear for fragging these. While it is a very rare occurrence that someone gets the toxin on or in them it happens enough that you should never skip the precautions. Looks like a nice small colony in your pic, enjoy it.