The ornamental design for a fightingcage, as shown and described.
FIG. 1 is a front elevational view of a fighting cage showing our new design;
FIG. 2 is an elevational view of a second side of the fighting cage of FIG. 1;
FIG. 3 is an elevational view of a third side of the fighting cage of FIG. 1;
FIG. 4 is a top plan view of the fighting cage of FIG. 1;
FIG. 5 is a front elevational view of the fighting cage of FIG. 1; and,
FIG. 6 is a perspective view from above a left front side of the fighting cage of FIG. 1.
The dashed lines indicating stairs and screens of the walls and the door are for the purpose of illustrating unclaimed environment of the design and form no part of the claimed design.