PROBLEM TO BE SOLVED: To provide a fish aquarium that can remove underwater deposit comprising remaining bait and feces in a short time, is reduced in remainder of the underwater deposit of the bottom, is reduced in discharging of a tank water, does not generate a strong water flow, is reduced in an adverse effect to fishes, and is reduced in the need of maintenance.SOLUTION: A fish aquarium includes: a water tank 12 for holding a tank water 1 in the inside and breeding or culturing fishes permeable capture cloth 14 stretched along a bottom face 12a of the water tank 12, and capturing underwater deposits 2 comprising remaining bait and feces a capture cloth moving device 16 for returnably moving a portion of the capture cloth 14 to the outside along an inner wall of the water tank 12 while stretching the capture cloth in the bottom face 12a and a capture cloth cleaning device 18 for removing the underwater deposit 2 captured to the capture cloth 14 and cleaning the capture cloth 14 in the outside of the water tank 12.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】残餌や糞からなる水中沈降物を短時間で除去することができ、底部の水中沈降物の取り残しが少なく、水槽水の排出が少なく、強い水流が発生せず、魚類への悪影響が少なく、メンテナンスの必要性が少ない、魚類水槽設備を提供する。【解決手段】内部に水槽水1を保有し魚類を飼育又は養殖する水槽12と、水槽12の底面12aに沿って展張され残餌、糞からなる水中沈降物2を捕捉する透水性の捕捉布14と、捕捉布14を底面12aに展張させたままその一部を水槽12の内壁に沿って外部まで復帰可能に移動する捕捉布移動装置16と、水槽12の外部において、捕捉布14に捕捉された水中沈降物2を除去し捕捉布14を洗浄する捕捉布洗浄装置18と、を備える。【選択図】図1
