Why is someone loading a fish into a tube?

That’s Whooshh. It’s a high-tech fish removal system, something like a cross between a potato gun and a pneumatic tube at a drive-in bank.

And that fish is a common carp, one of the oldest and most invasive fish on the planet.

[Like the Science Times page on Facebook. | Sign up for the Science Times newsletter.]

Cyprinus carpio, the common carp, is a close relative of the goldfish, native to Eurasia. It has been farmed throughout Europe for about 2,000 years. In the 1880s, the federal government brought over more than 300 carp to the United States from Germany, at the request of recent European settlers. They bred the fish in ponds in Washington, loaded their offspring onto rail cars, sent them across the country, sometimes dumping them directly into lakes and rivers.