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That's good news edikpok!

Mine still has the white line, but it hasn't gotten any worse.

This may be a little daft but although the orginal case was not, could any of your featherfins merely have heater burn? They are notorious for lodging themselves next to the heater and heater burns look white and kind of like scabs

Mine doesn't even get close to the heater so heating is not the problem
Aura,
Have you tried changing the water more often and get the carbon out? what do you feed it with? does is eat OK?

I know mine isn't heater burns either. There is just a thin white line running down both sides of the body. The lateral line is white. (But thanks for the suggestion!)

I don't use carbon and I normally change about 30% of the water each week. I feed the tank NLS pellets and they come right out to eat with the other fish at feeding time.

I have two featherfins exactly the same age, same size, purchased the same time, pretty much identical. Both have lived in the same tank and experienced the exact same changes in water, chemicals, etc., etc. One of them got the white spot stripe on both sides and a small white spot on the tail, while the other is just the same as when I bought him.

Makes me wonder if it is some sort of genetic thing? does this add anything to the mystery?

I haven't tried treating it with anything because didn't actually think it was anything to worry about. It hasn't changed for the better or worse since it appeared a few months ago.

I just realized this thread is a few weeks old, does anyone have an update on their spots?