I have seen one specific attack mode where the apisto comes from slightly behind and attacks the gills. I had one male Tefe claim a whole 150 tank, so the species has something to do with it too. ------------------------------------------------------------------------- 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"!