The ornamental design for a fishingtowel, as shown and described.
FIG. 1 is a perspective front view of the fishing towel, showing my new design;
FIG. 2 is a front side view with the back side view being a mirror image thereof;
FIG. 3 is left side view with the right side view being a mirror image thereof;
FIG. 4 is a top side view thereof;
FIG. 5 is a bottom side view thereof; and,
FIG. 6 is an environmental perspective front side view.
The dashed lines within the towel show represent boundary areas and form no part of the claimed design. The broken lines outside the top of the towel in FIG. 6 represent environmental subject matter and form no part of the claim.