Pictures attached. Turtle is still eating well and swimming. I was told that it appeared more or less "suddenly". Never had any disease before even as a baby. The only suspect I can think of are 1. Pleco sucking on it (they have coexisted for years however 2. It got spooked and injured itself one night 3. Fungal infection. Water parameters check out however. What does my FRT have and how do I treat it? I have raised it for the longest time and do not want to lose it. Thanks! Note: Affected areas are under the head and on top of the shell. The turtle is not with me at the moment and these are the clearest pictures I could get.