I have a bluesided wrasse and use black Tahitian moon sand in two tanks with wrasse. I love the look of it and it's Taylor made for jawfish. I use it in my carpet tank and it colors everything real nice. I plan on using it for my cube tank also. But I only use it as the top layer and have oolite making up most of the depth since it's 4-5" deep. It works well and looks great. As far as fish coloration goes my blue sided wrasse colored up real nice to include a brilliant blue belly. That my two cents worth.