PROBLEM TO BE SOLVED: To provide an aquarium water bath which can easily switch a pipe flow provided to the water bath.SOLUTION: An aquarium water bath A1 of the present invention includes a water bath body 9, an inflow port 42, a first port 43 and a second outlet 44. A flow switching means P1 is provided which is configured to allow a switching operation between: a first flow state in which the water W flowing from the inflow port 42 flows out of the first outlet 43 and a second flow state in which the water W flowing from the inflow port 42 flows out of the second outlet 44. The flow switching means P1 is detachably attached to a side wall 90 of the water tank body 9.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】水槽回りに設けられる管流路の切替を簡単に行うことができる観賞用水槽を提供する。【解決手段】本発明の観賞用水槽A1は、水槽本体9と、流入口42、第1出口43および第2出口44を有し、流入口42から流入した水Wが第1出口43から流出する第1流路状態と、流入口42から流入した水Wが第2出口44から流出する第2流路状態との間で切替操作可能な流路切替手段P1とを備える。流路切替手段P1が水槽本体9の側壁90に着脱自在に取り付けられている。【選択図】図1