Swordfish Bill

I have a fish in a jar. I want to know what kind it is.?

I recently acquired a fish in a jar. (Don’t ask) Supposedly it has been in a jar since 1976. It is about a foot and a half in length but it is hard to tell the exact length because it is curved in the jar. The end of the fish is the interesting feature. It has a long nose where after the mouth there is about five inches of a snout. The nose is ovular and comes to a duck bill. The person we acquired it from called it a spoon billed swordfish. I looked but could not find such a thing online. I did find many recipes on how to eat a swordfish. If you do not know what kind of fish I would appreciate a hint in the right direction. Eventually I would like to make a plaque with the genus and species of the fish.

It could be Polyodon spathula, better known as the American paddlefish. Once common in slow moving systems in the southeast and midwest, they have a bill-type snout that they use for straining zooplankton out of the water column. They can get up to be about 5 feet long and around 60 pounds. Now declining in numbers, there are hatcheries along the Mississippi River and Missouri River to help restore their populations.

Broad bill Swordfish stuck