The ornamental design for the fishtape, as shown and described.
FIG. 1 is a perspective view of the fishtape.
FIG. 2 is a side view of the fishtape.
FIG. 3 is another side view of the fishtape.
FIG. 4 is a front view of the fishtape of FIG. 1.
FIG. 5 is a back view of the fishtape of FIG. 1.
FIG. 6 is a top view of the fishtape of FIG. 1; and,
FIG. 7 is a bottom view of the fishtape of FIG. 1.
The broken line showing of structural features is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design.