Invasive snakehead fish found in Pa. waterway: officials say to kill on sight After an invasive northern snakehead fish was found in the Schuylkill River in Phoenixville, Pennsylvania, officials ...

PHOENIXVILLE, Pa. (WPVI) -- An invasive species of fish has once again reared its head in the Delaware River Watershed, leading to a warning from park rangers. Park rangers at the Black Rock ...

READING, Pa. - It may look like something out of a sci-fi movie, but it’s very real, and it’s here in Pennsylvania. The Northern Snakehead, a predatory and invasive fish, has been spotted ...