Pond Boss Forums GENERAL QUESTIONS Help Last Rites Over This Grass Carp ?

I have 5 grass carp in my pond - all 14 years old. One of them has been acting strange for the past month, swimming around by itself (unusual because they typically swim in a pack) with his tail fin and dorsal fin sticking out of the water. Just seems to wander around aimlessly and sometimes just sits motionless in one spot.

I find this to be quite unusual - is it in the early stages of dying ?

See picture