Critters???

[fishcrazy]

I've noticed these little bug-like critters cruising around the rocks in my tank at night after the lights have been out for awhile. They are fast and look kind of like rolly pollys. They stick to the rocks, I haven't seen them on ay corals. Any ideas?

[hobogato]

they are probably copepods - a good thing.

[GaryP]

My guess is amphipods (Gammarus Shrimp).

[MattK]

Any of these?
http://www.reef-aquarium.net/resources/livestock/critters/shrimp.html