Light is low. Make sure there not a lot of flow on it,
And the mouth looks open which is not a good sign either,
How deep is your tank?
Any tank deeper then 18" I would go with a 4x54w t5.
light is EVERY anemone life support,you feeding it comes in second.
Hope that helps a bit.GL
Ps: light is the only problem I see with the info you gave, but as long as it still has some color means it still has a chance to heal...this being my personnel experience .
Fix your fins or get your fins fix