I hope they thrive..They tried electro-shock netting,but it is out of their hands.It started with a Thai national who bought two of them to make soup for his sick sister-apparently,the fish is rumoured to have medicinal qualities.She got better before he could make soup of them,and he released them into a small pond in an area with access to a tributary of the Potomac River-QUITE a distance.We had a flood..The snakeheads showed up over 20 miles away in a small creek that is a tributary.Authorities drained the original contamination site,a pond of 3 acres.Timeline:two years-they found 4,000 snakeheads.Incredible,,,The story is documented in next week's Washington Post Magazine,on newstands next Sunday.