Okay, I've swapped the 4" percula with this tiny clarkii...I think.
As I look at this several questions comes to mind:
(1) Is this a BTA or E. Quadricolor? It's colored green in the disc.
(2) I was shocked to see the clown fish disappear inside the mouth of the anemone. It seems to like doing this every now and then. Is this normal?
(3) The anemone is not attaching itself to the sand or climbing to attach to the rocks. Do I move it to the top of the rocks?
(4) When I turn off the lights at night, the anemone either expands (e.g. seems to fill up like a balloon) or shrinks with the tentacles getting really thin. Is this normal?