Had to sump the black clownfish, 'cause they were being punked by the clarkiis and were easier to catch. When I get some time, I'll switch the pairs. The Clarkiis(Sebae's?) have always been mean. I was hoping the mass addition to one environment would make them tolerant. I didn't realize until last night how vicious they are. You can hear their bites snapping down from outside the tank!