Fluid cartridge

FIG. 1 is a top, front, right perspective view of an embodiment of the claimed design;

FIG. 2 is a top, rear, left perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a right elevation view thereof; and,

FIG. 8 is a left elevation view thereof.

The ornamental design which is claimed is shown in solid lines in the drawings.