Yeah all cichlids can be a pain in the butt. They all four pick at each other but nothing too serious. It is amusing how curious they are. I had my entire arm in the tank taking all the gravel out (a little project of mine) and they were coming within inches of my hand kind of like a dog that wants to smell you.
I don't plan on adding any more fish to this tank, if I ever get more rescues I might take them in if it is life or death. I plan on eventually budgeting out enough money to buy 2 AC110's to complement the sump but I just paid for my honeymoon

so who knows when I'll have the money. She is pretty cool with me having my tank but since I am still in school money is really tight.