PROBLEM TO BE SOLVED: To eliminate the restriction on the installation location and movement, and to make an air pump, a power cord, and an air tube less noticeable while preventing the capacity of a water tank from becoming small.SOLUTION: An aquarium apparatus includes a pedestal 20 having a space internally, the water tank 30 set up on the pedestal, a through-hole formed on the bottom face of the water tank 30, an air passage 40 from the inside of the pedestal 20 to the inside of the water tank 30 through the through-hole, and the air pump 50 that is battery-driven, stored in the pedestal 20, and is for supplying air in the water tank 30 through the air passage 40.COPYRIGHT: (C)2013,JPO&INPIT【課題】設置場所や移動の制約をなくし、かつ水槽の容量が小さくならないようにしつつ、エアポンプや電源コードやエアチューブが目立ちにくくする。【解決手段】内部に空間を有する台座20と、台座の上に設置された水槽30と、水槽30の底面に形成された貫通孔と、台座20の内部から貫通孔を介して水槽30の内部まで至るエア通路40と、台座20の内部に収納され、かつエア通路40を通して水槽30の内部に空気を供給するための電池駆動式のエアポンプ50とを備える。【選択図】図2