PROBLEM TO BE SOLVED: To provide a water tank for fish and shellfish, including a drainage function capable of efficiently disposing of residual feed and the excrement at the time of changing water while securing safety of fish and shellfish.SOLUTION: A water tank for fish and shellfish includes: a water tank body 1 capable of housing living fish and shellfish a discharge part 15 provided in the deepest part of the water tank body 1 and an exhaust passage 41 connected to the discharge part 15. The exhaust passage 41 is raised along the depth direction of the water tank body 1 in the outside of the water tank body 1, continuing from the discharge part 15. An absolute amount of water is secured in the water tank in drainage due to that an exhaust port 49 opened at the terminal of the exhaust passage 41 is arranged at a prescribed height above an arrangement position of a partition plate 31 in the depth direction of the water tank body 1 so as to leave water allowing at least fish and shellfish to survive.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】水替え時において、魚介類の安全性を確保しつつ残餌や糞などを効率よく廃棄できる排水機能を備えた魚介類用水槽を提供する。【解決手段】生きた魚介類を収容可能な水槽本体1と、水槽本体1の最深部に設けられた排出部15と、排出部15に連結される排出路41と、を有し、排出路41は、排出部15から連続して水槽本体1の外部にて、水槽本体1の深さ方向に沿って立ち上げられている。排出路41の末端に開口している排出口49は、少なくとも魚介類が安全に生存可能なだけの水が残るように水槽本体1の深さ方向で仕切板31の配設位置よりも所定高さをもって上方に配置して排水時において水槽内に絶対水量を確保するように構成している。【選択図】図3
