Just after Christmas, 2006, on December 29, public workers near the intersection of South Gilpin and Cypress Streets noticed a large fish lying on the shore of the Mahoning Creek. Upon examination, the fish turned out to be a three-foot bonnethead shark. Officer Heath Zeitler of the Punxsutawney police said "it might have been disposed of by some who had caught it while fishing elsewhere, or had previously kept it in a personal aquarium - a very large personal aquarium."
We might never know exactly where this shark came from. It had been theorized on Cryptomundo that the Punxsutawney shark could have wandered in from the Delaware River and through tributaries and such - while it is true that sharks have been known to wander into the Delaware, Jefferson County is extremely far from that river, and the Mahoning Creek empties into the Allegheny, anyway. Pittsburgh has seen several out-of-place animal reports over the years.