Anybody had any experience with these guys? I've done my research and they average 3 inches but max at 4 and are tough to get on frozen, but I'm prepared for the challenge. There's a couple threads about them and it seems they do well in reef settings, but my question is if one would do well in a 40? Live Aquaria has them listed at 50, but that seems a little large for such a small fish, but I can't find anybody that's had them in a system smaller than 100-120 or so to get an opinion. Tank mates would be peaceful, I plan on a green mandarin and a pink streaked wrasse along with my YCG.