Abstract: A portable watertight signaling device for attaching to a fishing line to provide a selectable audible or visual alarm indication when a fish exerts a pull on the line. A fish line engaging switch mounted exterior to the housing includes a tension adjustment for varying the amount of pull necessary to activate the switch and actuate the alarm. A switch extending through the housing wall for selecting the audible or visual alarm mounts a circuit board carrying the visual alarm interior to the housing.