Clownfish emergency

[Scope]

My female clownfish all of a sudden started floating uncontrollably around the tank. All other fish are okay. I held her in the stream of power head water and it seems to have woken her up a bit but she's swimming erratically. What's going on?

 

[Privateye]

I hate to say it, but that doesn't look good. Loss of balance can indicate an internal infection that's reached the central nervous system.

@Jay Hemdal may have some sage advice. I haven't had good luck with fish exhibiting this behavior.

 

[Scope]

I hate to say it, but that doesn't look good. Loss of balance can indicate an internal infection that's reached the central nervous system.

@Jay Hemdal may have some sage advice. I haven't had good luck with fish exhibiting this behavior.

It just happened all of a sudden during evening feeding. I quickly checked parameters but everything's in check.

I now caught her in a net and pinned against the glass. She can move there but won't get hurt from bouncing around the rocks or sucked into the powerhead.

I have a foxface so perhaps she could've gotten stung?