Ten gallon tanks work well. I have had pairs of A. cacatuoides, and A. sp. "Rotpunkt" spawn and raise fry for a bit (had to move fry to a larger tank when they grew). I currently have a pair (I hope) of A. agassizi in a ten gal. too. I have planted all of my tanks for about four years now, and have just started adding CO2 into my planted tanks. It didn't bother the Cacs. and the aggies don't seem to mind it either - the plants are pearling daily. In these small tanks, I go without dithers (small fish like pencilfish, or hatches is what I have). I did have a very heavily planted twenty gal. with a school of six glowlight tetras with a trio of A. cacatuoides, and both females raised their fry to large enough to be able to avoid the tetras. HTH. ===== J. Miller Edmonton, AB, Can. __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.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"!