Recently i bought and acclimated a coral beauty angelfish to my existing fish tank?

containing two clownfish, a damsel, six line wre, pj cardinal,orange spoted goby ,and select inverts. At first the fish seemed to be getting alone well ,but recently the coral beauty has been casing my clownfish and killing both of them. Also two peppermint shrimp. Is he just being over territorial or just a jerk of a fish? Any help/info is good thanks a bunch