Giant Koi in the Watauga?

Last week I found myself fishing on the Watuaga river.  The day started just like any other day of fishing with Nice catches of wild rainbows and browns.  I worked runs and pools with nymph rigs and finally decided to walk downstream to a favorite hole I had left behind.  When I got there, same thing, browns and rainbows but wait, whats that huge orange and black thing swimming in the shadows?  I suddenly realized that the trout in this pool were not alone!  I only saw the monster fish once before it vanished.  If I had to guess I would say that the giant fish was a Koi that escaped from a pond nearby.  I know one thing, I’ll be back to find out!