The Fenton Ghost Fisher is one of Fenton Works' many gadgets. It is a fishing line coated with a special high-test ectoplasmal resin that ghosts can't break.
In "Public Enemies," Jack attempts to use it to capture Danny Phantom, but is unable to use it as it becomes tangled.
The Fenton Ghost Fisher looks like a normal fishing pole with a glowing fishing line. The pole is collapsible into the handle, leaving a small metallic cylinder.