Former President George H. W. Bush caught a mammoth tarpon Saturday while fishing off the Florida Keys near Islamorada, Fla., according to the Florida Keys News Agency.

Bush chose to release the giant with an estimated weight of around 135 pounds -- the largest tarpon the 84-year-old ex-president has ever caught, the agency reported. The boat on which he was fishing had a legal harvest tag.

In place of the fishing trophy, a fiberglass reproduction mount will be commissioned to hang in the George H. W. Bush Presidential Library at Texas A&M University.

Bush, accompanied by former Olympic skiier Andy Mill, wrapped up a weekend angling trip to the Keys Sunday, the agency reported.