| 摘要 |
A fish feeding device utilizing a solar ray collecting device and a algae cultivating device. The fish feeding device comprises cylinders vertically installed in water so as to waft or float therein, solar ray collecting devices and/or artificial light sources equipped on the cylinders, cultivation devices suspended from the cylinders for cultivating algae or the like, and optical conductors for supplying solar rays and/or artificial light rays to the cultivation devices.
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