Garfish - Needlefish?

[PaulS]

Was fishing a river last week about 6 miles from the ocean. We saw 2 of what looked to be needlefish or garfish swimming next to each other in the fast moving current. They were about 15" long. No one there has ever seen anything like it there. Any idea if they were needlefish or garfish? Can either fish live in fresh water and are they likely to be that far upriver? Or could it have been something else?

Thanks