the yellows do that?

It will be fine I think in there for a few days.

hope she gets better...

could you also do something like that with new babys?

Need a small air stone inside to keep water circulating.

colin i have done it not with fry but slightly larger ones as they couldn't get out i only did it for a day while a got a new tank set up for them

I don't see why that wouldn't work temporarily. I don't know that you would be able to medicate her in there if you needed to though.

Lots of 'open space' in this pic, is this the main tank or separate quarantine? Any tank changes planned (decoratively or stock-wise) to minimize her getting beat up again once she's all healed up?