I kinda figured it was battle scars but I don't think there is a solution because most of there injuries come from slamming into the top of the tank while feeding and not from fighting but I will be looking into lymphosistis just to be sure.
Thanks for the replies guys.
The flag tail had always had that red tint in its fins and they do not look like sores.
From what I have read there is no cure for lympho, is this correct?