Hi, not sure I have seen this before but my female Borellii has recently been showing dark pigmentation around her head. Picture doesn't even fully do it justice, but you can get the idea. She had been in yellow breeding coloration for quite a while (had some fry, kept them together for a few months) but now she is on her own in my new tank. She was pretty shy for a week or two after being transferred but is out and eating well again now. Just curious if this means anything.