I will have pictures of this odd phenomenon up in a moment, but I had to ask about it.
I have had a fantail Black Moor for the past eight or so years. True to his name, he has been black for seven of those years--but during the last month or so, he had begun turning a quite beautiful golden-color. It started around his belly and pelvic fins, and has been creeping its way up. He now only has a "toupee" of black around his bulgy little eyes and his dorsal fin.
Aside from the interesting color change, the fish is fine. No ich, no dropsy, no tail rot--and I change his water and vacuum his gravel every week. I know it's not a disease...so what is it?
Oh, and as for the specs...
He (I just assigned him a gender, not really sure if its a "he") lives in a freshwater 5 gallon tank. He's been in there for about six of the eight years I've had him. No plants in the tank, and it is assumeably at room temperature because I don't use a heater. He eats Wardley shrimp pellet food, and the last time I did a water test (with the droplets in a sample, not test strips), everything checked out normally. He's the only one in his tank because he's pretty big--about four inches if you count the fan tail.
Has anyone ever experienced or heard of this before? I will have pictures up as soon as I upload them off the camera--give me about an hour.