To provide a water tank for decoration body and the water tank of interesting variegated than [problem]. A water tank ornamental body 10 includes a container-like housing portion 16 for holding the air, an opening 15 which is open constantly communicated with the accommodating portion 16, greater weight than the buoyancy caused by the air weight portion having a weight 13 (Choito 12 and the weight 13), a body portion 17 having a main body portion 17, when placed in a water bath filled with water (water tank body 50), at least the housing portion 16 is held on the air, the main body 17 having the accommodating portion 16 is erected toward the water surface. It can contain water plants in the interior of the housing portion 16.FIELD 1【課題】より変化に富んだ面白みのある水槽用装飾体及び水槽を提供する。【解決手段】水槽装飾体10は、空気を保持する容器状の収容部16と、収容部16に連通し常時開口している開口部15と、空気によって生じる浮力より大きい重さの錘13を有する錘部(張糸12及び錘13)と、を有する本体部17を備え、本体部17は、水を張った水槽(水槽本体50)に入れたとき、収容部16に少なくとも空気が入って保持され、その収容部16を有する本体部17が水面に向けて起立する。収容部16の内部に水草を入れることができる。【選択図】図1
