Few questions regarding more than one dwarf angel in a system. Firstly if I say, have a Jumping Bean (C. acanthops) and I added one or more smaller Jumping Beans, would the original harass/kill the new ones, or could a harem be formed? Secondly if I added two or three of the same size at the same time what would be the outcome? And finally can multiple species of dwarf be kept together? Tank size about 350l, need to change the aquascaping for more hiding places before I can add any.