Im going to add at least one wrasse to my tank soon and am looking at one of the possum wrasses, but had the idea of mixing it with a yellow coris wrasse. I don't know a whole lot on mixing wrasses, but I think it could be possible as they are both more peaceful species of wrasses and come from the same region. Adding them in at the same time with lights off and feeding I think could possibly make it work, but was just wondering on what others think.