With tb you are looking for a range of symptoms and not just one. She may have a spinal tumour or a cyst.
Here are the symptoms to look for in tb
* Loss of appetite
* Progressive thinness
* Sluggish movement
* Folded fins
* Eye protrusion
* Dark coloration and granular appearance of the cornea (this is the first sign in Angelfish).
* Skeletal deformity
* Hanging at the surface
* Skin defects, including blood spots and open wounds that may ulcerate
* Black spots, or overall dark coloration (in Cichlids particularly).
* Fin rot, characterised by the outer rays falling out.
* Scales loosening and falling out
* General swelling and scale protrusion (as in Dropsy)
taken from 4qd.org
Unless the fish is showing at least 3 of these symptoms then its a bit hasty to jump to one conclusion.
The fish looks happy and well fed so to me I would leave her be, and if and when she starts to lose condition or seperates herself and gets depressed or seems to be in pain then I would say to euthenise.
/www.fishforums.net/index.php?showtopic=172620
