his lip has what looks to be a sore. any ideas what it could be? he eats very well and it doesn't seem to bother him. i just don't want this to turn in to something threating. what am i able to do if anything?
Hmm..I think I know the disease, but I cant proper make out from the pics but does this relate:
Definition: Mouth Fungus is a disorder that produces a fungus like growth on the mouth. It is actually caused by the bacterium Flexibacter columnaris, commonly referred to as Columnaris.
It shows up first as a gray or white line around the lips and later as short tufts sprouting from the mouth giving the appearance of fungus. The disease is highly contagious and may be spread through contaminated nets, specimen containers, and even food.