A twelve inch snakehead was caught in Hunting Creek just off the Potomac River this week, it was announced today.<br /><br />Virginia Dept. of Game and Inland Fisheries personnel electroshocked the water but failed to find any more of the alien species.<br /><br />Hunting Creek is just off the Potomac River South of Washington, DC. If there is a reproducing population of snakeheads it would be a disaster for the river, as they are voracious and prey on many species.