domino damsel

Just added some BTA’s and literally 15min later my domino damsel is hosting it??

So I'm new to the aquarium hobby. I purchased a tank from someone who had 2 clownfish and 1 domino damsel. Previous owner said they all got along, but since moving it to my house that domino damsel has been a terror to the 2 clowns. he wont let them go anywhere near the rock. its a fluval...