What is "northern snakehead"

n. a fish, (taxlink Channa argus species noshow=1), native to Russia, China and Korea; considered to be invasive in the United States

n. a voracious freshwater fish that is native to northeastern China; can use fin to walk and can survive out of water for three days; a threat to American populations of fish

The northern snakehead (Channa argus) is a type of snakehead fish native to China, Russia, North Korea, and South Korea. In Europe, the first report of the species was from Czechoslovakia (now the Czech Republic) in 1956. In the United States, the fish is considered to be a highly invasive species. In a well-known incident, several were found in a pond in Crofton, Maryland, in June 2002, which led to major media coverage and two movies. Sightings have been reported at Central Park in Burnaby, BC.