The invention relates to an electric fluid pump with a semi-axial construction, in which the supporting ribs (31) are arranged between a pump housing part (32), situated on the radial periphery of the pump, and a first motor housing part (8) lying further inwards along the radius. In said pump, the motor housing part radially surrounds the electric motor (1) and the pump housing part (32) on the radial periphery is configured as one piece with the first motor housing part (8) and the supporting ribs (31). In comparison to known embodiments, this permits smaller wall thicknesses to be achievedfor the pump housing, since the supporting ribs provide sufficient strength. The number of parts and the weight can therefore be reduced.