A SAVAGE fish that eats everything it comes across, including people, has been hooked by a British fisherman — sparking fears of a deadly invasion.

The giant snakehead, originating from South-East Asia, has a mouth crammed with teeth.

It’s deadly in the water, but it can also “crawl” on land and survive out of water for up to four days.

The discovery of the fish in Linconshire, northern England, has caused widespread panic amongst conservationists and anglers.

An Environment Agency source told the Sun: “The reaction was, ‘Oh s***’. This is the ultimate invasive species - if it starts breeding here it’s a disaster.”

Andy Alder caught the snakehead in the River Witham while using a sprat as bait for pike. He told the Sun: “It had a gob full of razor-sharp teeth. To be honest it looked terrifying.”

It is believed the fish may have been smuggled in for an aquarium and illegally released.