To provide a water tank stand that is free from a problem of strength, and is capable of adjusting a lateral direction area where a water tank is placed.SOLUTION: A water tank stand includes a first placing plate 1 for placing an aquarium fish tank, a second placing plate 2 arranged downward to the first placing plate, and leg members 3 arranged to the left or right in order to install the first placing plate and the second placing plate. The water tank stand is configured as follows: the left and right leg members constitute quadrangular frames by a front side frame part 30, an upper side frame part 31, a lower side frame part 32, and a rear side frame part 33； a first auxiliary frame part 34 for connecting the front side frame part with the rear side frame part is arranged in the lower part of the upper side frame part； a second auxiliary frame part 35 for connecting the front side frame part with the rear side frame part is arranged in the upper part of the lower side frame part； there are included a first coupling mechanism for placing and coupling the first placing plate on the left and right first auxiliary frame parts and a second coupling mechanism for placing and coupling the second placing plate on the left and right second auxiliary frame parts； and the coupling position by the first and second coupling mechanisms is made adjustable.SELECTED DRAWING: Figure 3【課題】強度的な問題がなく水槽の載置される左右方向の領域を調整可能な水槽台を提供する。【解決手段】観賞魚水槽を載置するための第１載置板１と、第１載置板に対して下方に配置される第２載置板２と、第１載置板および第２載置板を設置するため、左右に配置される脚部材３と、を備え、左右の脚部材は、前辺枠部３０、上辺枠部３１、下辺枠部３２、後辺枠部３３により四角形状の枠を構成し、前辺枠部と後辺枠部とを連結する第１補助枠部３４を上辺枠部の下部に配置し、前辺枠部と後辺枠部とを連結する第２補助枠部３５を、下辺枠部の上部に配置し、左右の第１補助枠部の上に第１載置板を載置させて結合する第１結合機構と、左右の第２補助枠部の上に第２載置板を載置させて結合する第２結合機構と、を備え、第１・第２結合機構による結合位置を調整可能にした。【選択図】図３
