The ornamental design for a fishingrodholder, as shown and described.
FIG. 1 is a front perspective view of a fishing rod holder showing my new design;
FIG. 2 is a front elevation view of the fishing rod holder;
FIG. 3 is a rear elevation view of the fishing rod holder;
FIG. 4 is a left-side elevation view of the fishing rod holder;
FIG. 5 is a right-side elevation view of the fishing rod holder;
FIG. 6 is a top plan view of the fishing rod holder;
FIG. 7 is a bottom plan view of the fishing rod holder;
FIG. 8 is a rear perspective view of the fishing rod holder; and,
FIG. 9 is a perspective view of multiple fishing rod holders arranged at one side of a ship.
The broken line showing of structural features is included for the purpose of illustrating non-claim subject matter and forms no part of the claimed design.