A filter apparatus for an aquarium comprises a housing (2) and a filter tank (3) located in the housing (2). A water flow passage (7) is arranged between a side wall of the filter tank (3) and the housing (2). The top of the filter tank (3) is provided with a water inlet (8) filter materials (61, 62, 63) and a water pump (4) that is used for pumping filtered water are disposed in the filter tank (3) the housing (2) is provided with several water inlet through holes (91, 92) the water flow pumped by the water pump (4) sequentially flows through the water inlet through holes (91, 92), the water inlet (8) on the top of the filter tank (3), and the filter materials (61, 62, 63), then enters the water pump (4), and afterwards, is discharged from the filter apparatus by the water pump (4). This filter apparatus suctions sewage in the aquarium (1) through the several water inlet through holes (91, 92) on the housing (2), and then the sewage uniformly enters the top of the filter tank (3), flows through the filter materials (61, 62, 63), and is discharged by the water pump (4). It is convenient to suction sewage from different parts of the housing (2), and the sewage uniformly passes through the filter materials (61, 62, 63), thereby improving the filtering efficiency.Selon linvention, un appareil filtre pour un aquarium comprend une enveloppe (2) et un réceptacle de filtre (3) situé dans lenveloppe (2). Un passage découlement deau (7) est agencé entre une paroi latérale du réceptacle de filtre (3) et lenveloppe (2). Le sommet du réceptacle de filtre (3) est doté dune entrée deau (8) des matériaux de filtre (61, 62, 63) et une pompe à eau (4) qui est utilisée pour pomper de leau filtrée sont placés dans le réceptacle de filtre (3) lenveloppe (2) est dotée de plusieurs trous traversants dentrée deau (91, 92) lécoulement deau pompé par la pompe à eau (4) circule séquentiellement au travers des trous traversants dentrée deau (91, 92), de lentrée deau (8) sur le sommet du ré
