I just did a massive water change and then switched the boys' sides so now Ludendorff is under the lighted side and Bowser is on the other. But this is when I noticed a white lump on Ludendorff's gill, not only that but it looks like there's a spot that's peeling too, like a healing sunburn. I took some pics:
Now, I read that sick fish sticky enough to know what's on it..
*Lude is in a 5g split with Bowser.
*temp is steady 81F
*filtered and heated, no air stone
*Bowser and a nerite snail are his only "tankmates"
*They're fed every day or second day various brands of pellets and frozen bloodworms, alternating by day
*Water is changed every week, about 50% at a time
*water is conditioned with Nutrifin AquaPlus, nothing else added
*Acting fine as he always does. First noticed the lump today.
*I bought him in February 2012 but the store buys the older VT's from Asia (cost effective) so he's probably close to 2 years old.
It doesn't seem to bother him and it's not swollen but does anyone have any idea what it could be?