bought a royal gramma yestarday and as soon as i put it in the tank the damsel wont leave it alone he keeps nippin at its tail the poor thing is lookin kinda rough, but he has found a good hidin spot where the damsel cant get to it, but idk if he is guna make it because he most likely wont come out to eat. should i take the damsel out or just try and isolate the damsel until the gramma gets settled in?