It is a very cool plant and I enjoyed having it for awhile, then it all just disappeared. Wasn't in a pond w/fish either. I think I disturbed it one time when I cleaned the muck out of the water it was in and it left. Loves muck!
There is more out there along a bike trail near town if I ever get the ambition to pluck out some more of it. If I put it in the pond w/the fish I have to protect it from them as they will eat it. Grows well in floating rings in a pond.
I made a giant floating ring for it also. It turns red at times.
Here it is in the little pond all by itself.