I partially disagree with the brichardi comment, once the pair bonds, I've very rarely seen too much aggression between the parents. I usually use a 20L, however, a ten gallon would be sufficient. The only problem that I can foresee is that they will not spawn as often as they would in a bigger tank, once the fry begins to take up space. The remedy, of course, is to simply remove the fry... very easy. So, I would offer my $0.02. Chris ------------------------------------------------------------------------- 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"!