A video of a fisherman being dragged down a river by a kingfish in Adelaide is going viral.

Matthew Gorne, a keen fisho from Adelaide, had just hooked a kingfish while on the Port River when the fish decided to take off, taking Matthew with it.  

“This is insane, it’s a big kingy,” Matthew can be heard saying.

It’s a wonder Matthew’s green kayak didn’t capsize as he dramatically wrestles with the fish.

‘C’mon, I can do this,” he breathlessly says as the fish pulls the kayak down what appears to be the length of a large, barge-like ship.

The size of the kingfish doesn’t become apparent until towards the end of the clip where the fish tows Matthew’s kayak against the vessel.

Check out the video up top


You can follow Matthew’s adventures here