Dr. kadar, in a very well reasoned proposal, points out: <snip>> Hence, normal behaviour cannot possibly be observed in our > aquaria. Recreating a natural biotope may require a tank that is 6 feet by > 6 feet and only 6 inches deep filled with leaf litter and several apistos - > and ideally minus their usual predators including birds. Not feasable in > most homes.<<snip> All of what Gabriella says is sound. This particular point, however, is worth thinking about. Perhaps someone can keep this in the back of his/her mind. This would make a good project for anything from a sixth-grade science project to a thesis. Observations of a big, shallow tank full of fish and leaves would be rather informative. A plastic wading pool would work, if we could actually see what was going on. A large, flat glass tank would be feasible, but it would take up a huge footprint. Bob Dixon ------------------------------------------------------------------------- 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"!