Hello I have a common pleco in the range of 10 inches or so who got an open sore on his nose area a couple days ago. It seems to have gotten an infection of some sort, what is it and how can I treat it? Looks like a yellow gas bubble, cant seem to find any info. Additionally the pleco occasionally gets large white sections like a reptile about to shed skin, the person I got him from said it is normal but I would like to clarify.







