Abstract: An improved fishing line strike indicator device includes a pair of biased clamping members to clamp the strike indicator device to the diameter of a fishing pole, a pivotable spring-biased signalling arm is set against restraint in a horizontal position, and is partially looped by a slightly restrained fishing line in a manner effective to release the arm from its restraint with forward movement of the fishing line. The released signalling arm springs to a vertical position indicative of forward line movement associated with the striking action of a feeding fish.