Hello I have three fish in my 90 gallon tank about 3-4 inches each. I have attached two of them to this post. (they look exactly like the ones i posted, not the actual fish). I believe them to be Mbuna The third one looks like them but I cant find its color. The fish I add next will probably be a bit smaller..about 2-3 inches. I was thinking some yellow labs or something red/orange. I am struggling with the female male thing but it looks like the fish I have are male based on what I read about color. Any suggestions?