Blue chromis sleeping at top of my tank

jmann020

New Member
So the past few days I've noticed 3 out of the 5 blue chromis I have are sleeping on the time of the tank, one by my filter and the other two by the heater. My temp of the tank is 78.5 degrees. My question is, is that normal for the fish to sleep there? Or do I not have enough hole/ hiding places for them to sleep in. My blood shrimp and Watchmen goby are in the arch to the right.
 

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