Fish nipping

[EZMAC114]

Will Ocellaris Clowns nip at other fish? My Dejardini Sailfin Tang has had a mess up dorsal fin for a while and now I just noticed my Niger Triggers tail fin has been bitten

 

[Ricks Reef]

They can be territorial. Is it a pair of clowns? Their probabli in territorial protection mode. My 2 Clowns chase after my 8' Blue Face Angel whenever he cruises by their Anenome.

 

[EZMAC114]

Yeah they are a pair but I never see them being mean so maybe it's when the lights are off