This air-breathing, snake-headed fish could soon invade European waters

With the ability to breathe air, slither across land, and gobble up everything in its path, this snake-headed predator isn’t a creature from a horror film — it’s very real. And experts fear it may be making its way to European waters.

A reptilian lookalike with a dark side

Late in May 2024, a fisherman in Missouri made an unsettling catch: a long, toothy fish with scaly patterns and wide-set eyes, earning it the name northern snakehead. Officially known as Channa argus, this fish isn’t new to U.S. waters — it’s the fourth specimen caught in Missouri in just five years. But every sighting sets off alarm bells.

This is no ordinary fish. Native to Asia, the northern snakehead has been making its presence felt well beyond its natural range, sparking serious concern among conservationists — not only in the U.S., but now in Europe as well.

Why? Because this thing is a survival machine.

It can breathe air — and walk

Here’s where it gets properly weird. The snakehead isn’t just a water-dweller. It can breathe air, survive for days out of water as long as its skin stays moist, and even wriggle across land in search of new territory.

One Missouri biologist shared that a recently caught specimen was left on a pavement for hours — and still didn’t die. This kind of tenacity makes it especially difficult to contain, and even harder to eradicate once established.

And the problems don’t stop at its respiratory skills.

A threat to native species

The snakehead is highly predatory, feeding on almost anything that can fit into its impressively large, tooth-filled mouth. Local fish, frogs, insects — you name it, it’s on the menu. In ecosystems where this species has no natural predators, it quickly throws the balance out of whack.

Its aggressive nature doesn’t just make it a top hunter — it also competes for food and space with local species. That means fewer resources for native fish, disrupted habitats, and a ripple effect that can destabilise entire ecosystems.

And as if that weren’t enough, the snakehead reproduces with frightening efficiency. According to U.S. wildlife officials, females can lay up to 50,000 eggs — and they can do this up to five times a year. That’s a potential quarter-million offspring annually from a single female.

Europe takes notice

This isn’t just an American issue. In 2022, the European Union added the northern snakehead to its official list of invasive alien species of concern. That means stricter controls on its trade, transport and release. But with global trade and warmer waters aiding species migration, the risk of seeing these fish establish themselves in European lakes and rivers is very real.

The International Union for Conservation of Nature (IUCN) points the finger squarely at human activity — from aquarium releases to live fish markets — for the spread of this aquatic invader. And once introduced, the snakehead isn’t exactly easy to reel back in.

A warning for anglers and nature lovers

If you happen to spot a fish that looks suspiciously like a snake and has no business being where it is — don’t ignore it. Wildlife authorities advise not to release it back into the water, and instead report it immediately. Prevention is still the best (and cheapest) form of control when it comes to invasive species.

Because let’s be honest: the last thing European rivers need is an air-breathing, egg-laying, super-predator on a mission. This is one fish that truly earns its title as a biosecurity nightmare.

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Brandon Lee

Hi, I’m Brandon from the Decatur Metro team. I guide you through the trends and events reshaping our region.