Terry Sheppard lands a 10.5 pound snakehead on the Tidal Potomac River, May 14, 2015. (Kevin Ambrose) ...

A decade or so ago, no snakehead fish were in the Washington region. Today, more than 20,000 are in the Potomac River, experts say, a population approaching that of the largemouth bass, which was ...

One fish was a worry. Two fish were a troubling trend. Now that the total is up to nine, some scientists say they're close to conceding: The northern snakehead is in the Potomac River, and likely ...

A 17-pound-6-ounce northern snakehead fish was caught Saturday in Aquia Creek, a Potomac River tributary. If the catch is certified, it would be a new world record.

The invasive snakehead fish has arrived in at Dam No. 4, the farthest north up the river wildlife officials believe the species has reached.

A man from Indian Head, Maryland, has caught a record-breaking snakehead fish in the Potomac River.

FORT BELVOIR — John Odenkirk knows snakeheads as well as anybody, but the invasive fish now living in tributaries of the Potomac River occasionally surprises him.

Research by George Mason University scientists at the Potomac Environmental Research and Education Center supports the Potomac River. Scientists fileted a snakehead fish to study it.

The northern snakehead, an invasive species of fish native to Asia, has successfully broken out of the Potomac River system and established itself in the Rappahannock River, according to state ...

Snakeheads have made it as far inland as Huntley Meadows Park. Snakeheads and other fish travel up and down the streams that connect to the Potomac River.

Snakeheads were illegally dumped into a pond in Crofton, Maryland two years earlier. They spread into the Potomac River drainage, eventually making their way into Virginia streams. They finally ...