Naso Tang acting funny

[naesco]

Likely it is stress but dont panic.
If you have not added anything to your tank, and have kept your hands out of the tank, and your parameters are constant it may be that it is getting too much attention from you.
Approach the tank less frequently and observe her from a distance.

The other thing it could be is that you are getting some electrical charge from a powerhead or other piece of equipment. If you dont have a titanium ground now would be a good time to invest in one.

Wayne