OK.. looks good.. I was concerned about the live rock, but not any more. Clowns can pick some weird places to "hang out". They may be in a romantic mood, or just becoming pals. As an after thought, what is it you are feeding them? One thing that may help is to put your food in a glass of the tank water then dump it in. Be sure you feed enough so the skunk gets a share.
Having a skunk shrimp that is healthy is a good indicator, and to be able to see such things was why I requested to see a larger picture. They are a hoot aren't they?
I think your tank is looking healthy. ... although, I am still wishing I could know what your salinity is. How are you checking it?.. and are you?
81° is ok on temp as long as you don't let it swing much in a 24 hour period. With higher temps it becomes more important to keep good water flow. I keep my temp between 79° and 80°, we are right there together.
EDIT: BTW nice job on the picture.
