Colin, I have seen some awfully weird things seemingly spontaneously generate in water... of course, they don't really get there that way, but the modes of transmission are often beyond detection. I don't see terrestrial leaves as a likelier source of introduction than a dust mote settling out of the air. If I was you, I'd be seeing if anyone likes to eat them, and - if so - how hard it is to make more of them! Baby apistos and small mouthed dwarves like Taeniacara tend to love stuff like that... Martha ------------------------------------------------------------------------- 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. apisto-digest@listbox.com also available. Web archives at http://lists.thekrib.com/apisto Trading at http://blox.dropship.org/mailman/listinfo/apisto_trader