>>>A. panduro & A. nijsseni can be pretty rough on other species and a 30 gallon long tank can be controlled by a single pair if not aquascaped properly...<<< Then I'd be better of with just the one species. I do have two male M. altispinosa Bolivian Butterfly's (I had a reverse trio but lost the female). But I would guess that their body shape and coloration would trigger territorial disputes too. Thanks. Bill Vannerson McHenry, IL http://ourworld.compuserve.com/homepages/william_vannerson ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!