Silver dollar tail question

So a day after I got my 3 SDs one off then lost their tail completely. For 3 months it didn't show any progress of growing back, was just a nub. Was told it wouldn't ever grow back since it was down to the base. Recently had an ich out break so did the high temperature and salt treatment, cured the ich but now his tail is growing back. Any idea on what was causing the tail issue based on what cured it?

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There wasn't any aggression that I could see, the other 2 sd were fine. I assumed it was fin rot, treated with melafix right after then just accepted the loss. Now it's growing back. Soo odd

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sross said:

In the past I've had the same thing happen to few of my Silver Dollars. In my case the cause was fungus. It looked like they had sprouted cotton on their sides. I had 3 that lost their tails completely and few others that had minor scale damage. They all grew their tails back after a few months.

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This is exactly what it looked like. So I'm wondering if the heat & salt had anything to do with the recovery or if it was just time. I'll try to get a picture of it now, which is about a 1/4 inch of a tail grown back.

Hard to see but he's the one in right. His tail growing back now. They in qt tank

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