Interesting stuff to be sure. I read the thread you posted months ago, I guess when you stocked them, then re-read it yesterday which got me to thinking again about trying them...There's no piping in the pond I would stock them in; it is on a property with several other ponds, but there's no above-ground (i.e. none whatever that I know of) flow from one pond to the next as they're all old phosphate pits and thus each one is in somewhat of a hole.
I'll do some research on the area watershed, along with local laws. I do know the river I mentioned also has multiple species of endangered mussel, so evidently the Asiatics haven't done them in; a large (60 acres) lake I work with has some sort of freshwater clam, as the owner mentioned it and I've seen a good number of their empty shells along one shoreline. If I decide to stock the Asiatics I'll keep you and the forum notified of the progress of the experiment.
