Looking at my fighter today, I think I may have noticed some damage on his fins. I'm wondering whether this is damage, and any advice on what to do. His tank mates are all happy with him, and I don't have anything that would nip at him. My only thought is that he grazed it on some bog wood, but doubt this. All my plants are real, so plastic plants are out of the question.
Pics (best i could get):
Pics (best i could get):