Hello I have a 75 gallon fowlr tank. Right now, I have a 2.5 inch huma picasso, 4 inch blue spotted goby, 2.5 maroon clown and a yellow tail damsel. I just recently found a baby lunare wrasse. The wrasse is about 2 inches. Would my tank be overstocked if I added the lunare? Most of the fish in my tank are slow growers including the huma. All of my fish get along pretty good. PS My tank has been up for 6 months. My nitrates are between 15 ppm and 20 ppm. In the future I am going to upgrade to a 125 gallon. Since, most of my fish are slow growers, would I be ok to add the lunare?Thanks