Wels Catfish

From U.S. Fish and Wildlife Service Midwest Region:

Just like fighting zombies, a good defense to unwelcome invaders is a good offense. Put away your zombie apocalypse protocols, we have a better plan to stop future animal invasions: http://go.usa.gov/ccxZG

Photo: Wels catfish courtesy of Andrea Janitzki/Creative Commons. https://flic.kr/p/q2LHjV