Hi, I was cleaning out my ball python enclosure today and noticed something that I have never seen. I took my male ball python out and noticed that he had what appeared to be scars along a significant portion his ventral scales. I have no clue what this could be, I've had my ball pythons in the same setup for years the only thing I've somewhat recently changed is I replaced my old substrate paper towels & newspaper with reptile bark with a bit of moss. I am not sure whether it could be that, if maybe the other ball python in the enclosure pushed up against a hide rose it a bit and dropped it on his belly somehow or if it could be due to him rubbing against a somewhat rough edge on something in the enclosure. Another thing that came into my mind was maybe scale rot or burns, I am not really sure what causes scale rot but I haven't changed the heat in the enclosure so I don't think it's a burn. Has anybody ever seen anything like this before? Could it something major like scale rot? Will they heal if they are just scars after a shed?

Please don't flame me for having my ball pythons together, they've been together for 8 years without any issues and I have plans to separate them really soon anyway, I just have to move a desk out of my room to make space for the new equipment which I already have ready.

Any advice or opinions would be greatly appreciated.