The invention relates to a fluid storage device (1) for storing a fluid (3), in particular a reducing agent, having a fluid tank (2) and a filter (5) for filtering a fluid (3) that can be stored in the fluid tank (2). According to the invention, the filter (5) is provided in an interior (14) of a housing (13) disposed in the fluid tank (2), and the housing (13) comprises at least one inlet opening (16) for feeding fluid (3) from the fluid tank (2) into the interior (14), wherein the inlet opening (16) is disposed in the fluid tank (2) at a distance from the bottom.