I have had a single clown in the past, but this is the first time having a pair. Over the last few days they have not been earring well. Food that that are normally voracious eaters with they take in their mouths and then spit out. Not a ton of aggression towards each other, but a little bit of nipping as seen in the video below. Also, a lot of burrowing in the sand behind the rock.
https://imgur.com/a/U6vlX30