I have noticed on the growout tank that some of the bigger guys are beginning to carve out their influence. There's definitely now a pecking order and you can tell which clowns tolerate which other ones. This has been forming within the last couple of weeks and it is now to a point where a lot of the clowns now swim in the middle of the water column, as opposed to all being toward the bottom near the PVC elbows. A big bunch now come up to the surface to be "first in-line" for the TDO, while the others just wait in the water column for it drop down.