Okay, after much thought, I decided I want to do a fish only 40 gallon aquarium. The tank has been cycling for a month, I have 1. 3 spotted damselfish and a blue damselfish. I know these fish get fairly aggressive so I have the tank setup with sight breaking decorations, and rocks. So my question what are some good fish that would do great in this tank with my current fish? And how many fish could I stock?