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The one thing he does know is that their numbers "are going through the roof" because the fish are in a spawning mode for six months. Anglers have turned in 20 fish, but calls "are coming in so fast, I haven't had time to update my database. With less media exposure, I think you can figure there's more being caught than we know about. They're the rabbits of the water."
"Snakehead Alley" is the nickname given by recreational anglers and biologists to two canals off Little Hunting Creek just upstream from Mount Vernon. "You see them all over the place," says Steve Chaconas, a popular fishing guide who offers a "Bass and Snakeheads" package on the Web site www.snakehead pro.com. But truth is while customers ask about snakeheads and would love to catch one, they are mostly interested in largemouth bass.
"I'm trying to learn how to catch them, but I don't think you can. I think you just have to fish where they are," he says. "I'm worried about what happens if they spread. We can't drain the Potomac or fill it with poisons. I think you'll see areas of the Potomac dominated by them and squeezing out the other fish. Then you'll start to see a fight on the buffet line."
What happens when the habitat no longer supports the snakehead population is of interest to Walter Courtenay Jr. of the U.S. Geological Survey, who picked up the nickname "Dr. Snakehead" during the frenzy five years ago. Since the Crofton incident, northern snakeheads have been found in a number of places in the Northeast, from Flushing Meadows, not far from Shea Stadium, the home of the New York Mets, to two ponds outside Philadelphia, Courtenay says.
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http://www.baltimoresun.com/news/local/bay_environment/bal-sp.md.snakehead14may14,0,1085738.story?page=2&coll=bal-home-headlines