I know!!! Shame on me!!! Big Boy is in the 125 by himself & Rocky is in the 72 by himself. If something was to happen I would turn their tank's into quarantine tank's.
Since I wrote the original post I introduced two more neolamprologous pulchers to my other two pulchers in my 20 long. It appears I have two males who DO NOT want to share the tank and so the new male is in my "quarantine" tank for the time being. He's going back to the fish store to exchange (hopefully) for another female. It's nice that I have a place to put him and not have to endure a fight to the death which could have happened if I didn't have an extra tank. I have likely saved me 10 bucks as well.