Of Picasso clowns spend there time at night on the sand bed, almost motionless, together, they kind of lean up on each other to hold themselves up. I'm wondering if they are not healthy? Or just sleeping? They are always together, as if a actual mating pair. When I purchased them I did as a pair, and they were paired before as well, they are little baby's still don't have there black in yet. Are they ok do you think?