Don't mean to be rude fgcu, but you keep highjacking this thread. As the original poster pointed out, you answered a question posed to them and until the original poster said something I figured you were the original. Better to open your own thread, or help this person out in this one.
Apolyom, there are plenty of fish that can be kept. You may just have to have a slightly more aggressive tank. I have two damsels mixed with 2 clowns, one engineer goby, one cherub angel, and a pencil striped rabbit fish. I don't really have that much fighting.
When I added the angel, there was some fighting at first, but territories were established and everything was fine. Nobody messed with the rabbit fish. I assume they somehow know it's venemous. Plus it's 3 times the size of the damsels. Nobody has ever bothered the engineer goby. Probably because it stays well hidden in the sand.
I used to have a lawnmower blenny in there and a purple psuedochromis and there wasn't really any problems with them either.
My dad has a 3 stripe damsel too. He has since added a fire clown, a yellow tang, a blue with orange tail figi damsel, and a bluechin trigger. It makes for a more aggressive tank, but really they all got along fairly well.