Still 99% sure that's not a Berghia. I breed them and it does not look like the same animal:I did add Berghia like 9 months ago but haven’t seen any in ages. That, and the fact that I have new aptasia popping up, leads to me believe this isn’t a berghia. Haven’t added any new montis in over a year so I’d be surprised to find a monti nudi that large. I don’t see any damage on my montis either….