<；P>；PROBLEM TO BE SOLVED: To provide a method for rearing fishes or shellfishes (cultured fishes) in a closed circulation type culture apparatus, by which the installation can be simplified to more largely lower the cost of the installation, and labors and costs for operation maintenance than those of conventional techniques, and the characteristic smells and flesh qualities of the cultured fishes can remarkably be improved. <；P>；SOLUTION: The method for rearing the cultured fishes or shellfishes in the closed circulation type culture apparatus for the fishes or shellfishes with a membrane separation activated sludge treatment device as a main device for separating or degrading suspended substances and excretory substances from circulated water containing left feeds and feces extracted from rearing tanks, and ammonia, organic feces, and the like excreted from reared fishes, includes adding particular activated carbon to an aeration tank of the membrane separation activated sludge treatment device and operating the culture device. <；P>；COPYRIGHT: (C)2011,JPO&INPIT
