The ornamental design for a fishingjig, as shown and described.
FIG. 1 is a right side elevational view showing my new design for a fishing jig;
FIG. 2 is a left side elevational view;
FIG. 3 is a top plan view;
FIG. 4 is a bottom plan view;
FIG. 5 is a front elevational view; and,
FIG. 6 is a rear elevational view.
The broken lines shown in FIGS. 1 and 2 represent environment and are included for the purpose of illustrating only and form no part of the claimed design.