<;P>;PROBLEM TO BE SOLVED: To provide a system for culturing fishes or shellfishes, which can efficiently culture fishes or shellfishes. <;P>;SOLUTION: The system 1 for culturing fishes or shellfishes includes a water-supplying or draining device 20 for supplying water to a culture aquarium 10 in which culture fishes 5, 5, etc., are cultured and draining both water and impurities from the culture aquarium 10, a feeding device 40 for supplying a feed to the culture aquarium 10 to accumulate the feed on the bottom of the culture tank 10, and a feed-discharging device 50 for suspending the feed accumulated on the bottom of the culture tank 10 in the water in the culture aquarium 10, wherein the feed-discharging device 50 comprises a brush (a brush frame 62 and hair materials 64, 64, etc.) for washing the inside of the culture aquarium 10, a driving motor 65 for rotating the brush, and nozzles 62a, 62a, etc., disposed in the brush to jet water in the rotation direction of the brush. <;P>;COPYRIGHT: (C)2010,JPO&INPIT