The ornamental design for a “portable fishing light,” as shown and described.
FIG. 1 is a perspective view of a portable fishing light, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view of the portable fishing light, illustrating the fishing light once a light wand of the fishing light has been extended for use.