My Teug keeps nipping my Polli but is really not hurting her so I'm sticking it out until I upgrade. I have a lot of cover and she doesn't hunt her down to hurt her, it just happens sometimes when the Polli is in the Teug's direct space.
The Palmas aggression I had was very different - clamp, hold, shake, don't let go. And lots of fin damage in a short time. I re-homed her though she was beautiful.
I do like your plan of adding another and rescaping the tank, maybe at the same time. If that doesn't work could you put the CB Sen in a smaller tank for a bit while the other two settle back in, rescape, then add her back in?
The Palmas aggression I had was very different - clamp, hold, shake, don't let go. And lots of fin damage in a short time. I re-homed her though she was beautiful.
I do like your plan of adding another and rescaping the tank, maybe at the same time. If that doesn't work could you put the CB Sen in a smaller tank for a bit while the other two settle back in, rescape, then add her back in?