I don't see it.....usually a strange patch of skin is just going into shed. But could you put up a picture of the spot you are talking about and circle it if you can.?
Let me see if I can get a better pic...If you are looking at the pic it's his left leg right under the left side of his beard..right where his shoulder attaches to his chest..
I just set Swordtail's timer for his bath and paused it so I could actually fill his soaking bowl up and he crawled over my phone and canceled the timer
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!