I have 2 coral bamded shrimps and they do not come out in the daytime, maybe once in awhile I'll see them in around caves and stuff, as for my peppermint shrimps...... they actually did come out in hte daytime more often then the coral banded. So who knows. but they are still alive and they are in there somewhere, just look thru the cracks for a shaded area where they would be most likely to be. And you'll be amazed.