ID help tiny black creatures

dnh

New Member
I just noticed tiny black specks running around on one of my large rocks. They are about the size of these periods..... Any idea what they are? They move pretty quickly. I don't know if they are good or bad. They don't seem to be gathering in one place, just running around all over the rock.
I have a 29 gallon tank with a clownfish, a 6 line wrasse, a royal gramma, a cleaner shrimp, an emerald crab, several hermits, some polyps, a leather, and several mushrooms.
Thanks
 
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