| 摘要 |
A construction employing a plurality of mechanical fish which float together with live fish within a fishbowl, each of the mechanical fish including an electric motor driving a propeller for propelling the fish ahead, the motors being connected by relatively thin wires extending externally of the fish body and connected to batteries positioned within the bottom of the fish bowl, and each mechanical fish including a permanent magnet for positioning the fish relative to other adjacent fish of mechanical type, and each mechanical fish further including a weight for positioning it at a preset elevation within the water.
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