For the last 6 months one of them has developed lighter pigmentation or spots all over his body. It as though he is turning albino. The others are fine.
We moved to a new area about 12 months ago. Since then, the bigger one has been eating more and his tummy sometimes rubs on the stones at the bottom of the tank. He acts fine and doesn't seem to be in any pain or disomfort so we don't think he's sick. But we can't figure out what is causing the spotting.
We don't think it's a fungus because the other ones are fine and his colouring is healthy and bright. Please view the photo and thanks in advance for any help and/or advice. =)
The water temp is 25C pH is 7. I dont have any way of measuring amonia, nitrates or hardness.
This is how he looked 4 months ago
![Image](http://i91.photobucket.com/albums/k312/rustbucket1/new/loach.jpg)
This is how he looks today
![Image](http://i91.photobucket.com/albums/k312/rustbucket1/new/loach-1.jpg)