Watching the female agassizi more closely showed how the apistos have come to copy the keyhole display behaviour. She was trying to engage a keyhole in more conventional apisto way -coming up alongside with each fish facing the opposite way, and then backing the other fish up (so dominant fish swimming in reverse). The keyhole not interested and just swam off. So for the apisto to engage the keyhole, she had to come head to head and swim forwards in the keyhole fashion. Thus the keyholes are shaping up the apisto behaviour by refusing to engage unless the apistos approach in familiar way. As the apistos are so keen to get involved, they end up having to do it the keyhole way otherwise the keyholes just buzz off. Tom asked for more tank details - its a four foot, heavily planted, with rummies, ottos and pencils. The keyholes are half grown, probably three males, one female, and have not spawned or paired off as far as I know. Cheers ------------------------------------------------------------ from John McCrone ------------------------------------------------------------------------- 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://www.digital.com for "Apistogramma Mailing List Archives"!