I currently have about twenty-five aggies and cacatuoides in a 20-long. Standard UGF and some plants, four caves, three ottos, and that's it. They don't get aggressive enough to hurt each other, and tend to crowd the caves when I enter the room. I think the Rift-lake cichlid keepers have something with the over-crowding concept. The fish don't spawn, though. I have to pull a pair and put them in their own tank to get any fry. Bob Dixon Cichlid Trader List Administrator http://cichlidtrader.listbot.com ------------------------------------------------------------------------- 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"!