A man was shot in the leg with a spear gun during a an ill-fated fishing trip at a popular beach in Sydney’s south on Saturday afternoon.

Ambulance and police rushed to Yarra Bay near La Perouse at 6pm following reports of a man being shot in the leg.

Rushed to hospital: A man was shot in the leg by a friend with a spear fishing gun. Credit:Daniel Shaw

They found the victim in agony with a four-barbed spear firmly implanted in his right upper leg.

He said one of his friends had mistaken his leg for the catch of the day.