I pick all my fish judiciously. I took a FOS seriously 4 decades ago, now new to a reef, I am even much more particular. I say that because I want fish that will work with my Aquascape. Such as my 6 Line Wrasse as he enjoys sliding in and out of 5 tunnels. A Diamondback Gobi and Midas Blemmy that do their work on the substrate and 3 different species of Clowns that fill out the top half of the tank