Odd behavior on clownfish

[Reefer-begginer]

So I'm unsure of how to word this would sounding stupid.

My clownfish are chasing each other, and trying to bite each other, while also nipping at some pulsing xenia/mushroom corals. 

It also seems like my pseudochromis ( purple dottyback ) is trying to stop them from fighting or mating?

I honestly can't tell 

[Leo_ian]

This is very normal. Clowns can be assholes to each other and other fish. I have never heard or seen any clowns that nip at corals, you might want to check with other reefers