Fluid Tank

FIG. 1 is a perspective view of a fluid tank showing my new design; FIG. 2 is a front view thereof; FIG. 3 is a rear view thereof; FIG. 4 is a first side view thereof; FIG. 5 is a second side view thereof; FIG. 6 is a top view thereof; and, FIG. 7 is a bottom view thereof. The broken lines in the figures are included for the purpose of illustrating portions of a fluid tank and form no part of the claimed design. The dot-dash line in FIG. 7 depicts the boundary to the claim that forms no part thereof.