The ornamental design for a fluidcontainer, as shown and described.
FIG. 1 is a side elevation view of a fluid container, shown with a symbolic break at both ends of the present invention;
FIG. 2 is another side elevation view of the fluid container shown in use;
FIG. 3 is a front plan view thereof;
FIG. 4 is a rear plan view thereof;
FIG. 5 is a side plan view thereof;
FIG. 6 is a side plan view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines depict portions of the article and environment that form no part of the claimed design. The two breaks intersecting the sleeve of the fluid container in the drawings depict a symbolic break in the length of the claimed design and are not part of the claimed design. The appearance of any portion of the sleeve between the break-away lines forms no part of the claimed design.