Hey all, I'm looking for some expert opinions here. I have a group of rusties, and now that they've grown a bit, there seems to be alot more sparring going on. Anyway, I noticed some white marks on one of them and I'm wondering if it could be from the battling or if it may be some sort of fungus. I've never had any of them ill before this, and everyone is eating well and very active. Here are a couple of pics. You can see the tell tale white lips from lip locking and sparring. Thoughts?

