Scribbled Anthias with damaged tails, who's doing it?

[reefo420]

2 of my 5 scribbled anthias have damaged tails, I watch the tank all day pretty much and i've just noticed this it probably happened in the past few hours,
is this anthias agression between themselves or is it another aggressive fish?
the only fish i've seen do some aggresive things are:
large scarlet hawkfish
2 inch baby blue eye kole tang
and some other fish that can do it are:
porcupine pufferfish, and
Rainbow wrasse
but they have shown 0 aggression

 

[blaxsun]

My guess would be one of the other anthias, just based on how one will sometimes chase the others in my tank.