The ornamental design for a combinedaquarium and small animal habitat, as shown and described.
FIG. 1 is a front elevational view of a combined aquarium and small animal
habitat showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is an elevational view taken from one end thereof, the opposite end
being the same as the end shown; and
FIG. 5 is an end elevational view of a modified form of the combined
aquarium and small animal habitat shown in FIG. 1, the opposite end being
the same as the end shown.