I have yet to own an Umbee, but I have a 9' female Dovii that will try to attack anything that moves. She is serving time in maximum security for attempted murder of a 10' male Jag. I also have a 3' male Dovii that is serving time for the murder of a 3' Channel Cat, and attempted murder of a 5' TSN (could be gang related). But still the most aggressive Cichlid that I have owned is a 9' male Istlantum.

