Invasive plants and animals disrupt food supplies, carry diseases and cause an estimated $423 billion in damage every year around the world. When an Asian fish called the snakehead invaded waterways near Washington, experts warned it might devour the competition and upset of the ecosystem. But, as VOA’s Dora Mekouar reports, that’s not what ended up happening. VOA footage by Adam Greenbaum.

Source: voanews.com