Looking for a <4" colorful free simming fish that has a peaceful temperment that would thrive in a 58RR (36x18x21). Prefer no pod-eaters since a mandarin is goal #1 in the tank, but light pod-eaters will be acceptable. I want a McCoskers but damn if they aren't hard to find. Best I've seen in a Filmented Fairy Wrasse but I wasn't too keen on its coloration.