In my 20 gallon i have 1 male ap. agassizi with tetras an I want onto the dwarf of some sort. I don't want females for this is my show tank and I don't want dull colors and I don't want baby's!. My tank is heavily planted and has many caves for territory's. water is right for the dwarfs I just don't want fighting any ideas? Going to my lfs tomorrow so please reply soon!