A fisherman stranded in a marsh along the Petaluma River was rescued by a Coast Guard helicopter crew Saturday evening.

The man, whose identity was not released, was reported to be about 60 years old.

His boat, estimated at 18 feet in length, got mired in the mud and he tried to walk to shore, said Coast Guard Petty Officer Ron Skoda.

"He got stuck in the marsh and found himself fatigued," Skoda said, adding that the man had a hand-held radio he used to call for help.

The location of the 6 p.m. rescue was Donahue Slough, a couple miles up from the river mouth at San Pablo Bay.

A Coast Guard rescue swimmer helped secure the man in a rescue basket and into the helicopter.

He was taken to the Petaluma Airport to meet his daughter, and did not require medical attention, Skoda said.