Harlequin rasbora white discoloration on back

UnknownUser

So I know the majority here will shout “columnaris!” From this picture. And it could be that, I’m not sure. But I had columnaris in a guppy once and it just doesn’t look the same.

The tank just upgraded to a 20 gal so there was stress. I added Stress coat+ the day after. I scoop them into a cupped hand with water, I don’t net them. But certainly she could’ve accidentally touched my hand. Two days after the move, I see this white on her back. It’s not smooth, it’s rough like her scales are discolored or damaged in some way. There’s no fluff. It’s not sticking up from her.

She’s currently in my 10 gal as a QT and she’s acting completely normal and eating, albeit stressed from being alone. I did see, on day 1 after the move, a rasbora flash. But I don’t know if it was her and none of them have flashed since, including her.

My camera sucks at taking water pictures so sorry it’s blurry. Just want to know if anyone else has other ideas besides columnaris.
 

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UnknownUser

Probably got no replies cuz everyone thought it was columnaris. You would all be correct! Today she got another white bit in/on her mouth. She has since been humanely euthanized. SIP, little quinny.
 
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