Last year the ISW featured a post about a northern snakehead (Channa argus) found in a pond in Pennsylvania. Now there's an update from the BASS Times, and news is not good. Many more snakeheads have been caught this season, ranging from a hefty 5-pounder to one only 4.5 inches long. That means the snakeheads not only survived the winter, but they have likely established breeding populations. How long before one is caught in the Schuylkill or Delaware River? Officials are worried, but the article doesn't mention any plans in the works to prevent that from happening.