okay, what type of bug did I get with my order?

[Drock169]

i have seen those in one of my tanks before too. I assume it was an isopod, not sure where it came from, but what i noticed is that they were only on the underside of my acro frags. i couldnt find an ID on them, however when scanning across dozens of pictures of acro pests I noticed something that looked very similar to them.

As a recommendation, I would dip all of the SPS frags in either revive or pro coral cure.