It's not your everyday catch.

A fisherman off the coast of southern Alaska has reeled in a 'shortraker' that's bright pink, more than a metre long and believed to be up to 200 years old.

Henry Liebman with the shortraker rockfish that has been estimated at up to 200 years old. Credit:AP

The fish, a type of rockfish, was caught in 275 metres of water, weighed in at 17.7 kilograms and was just under 104 centimetres long, the LA Times reported.

But it was its age that saw the fish become an internet sensation.