PROBLEM TO BE SOLVED: To provide a fresh live-fish cuisine inexpensively by improving a breeding method or a transportation method of an aquatic animal in the sea water.SOLUTION: There is provided an optimization device in which a catalytic reaction is generated between live fish breeding sea water and powder ion exchange resin, and/or an air lift system filter is applied, and thereby powder ion exchange resin having an average particle diameter of 50 microns or less, and having pharmacological action for reducing a mortality rate of an aquatic animal in the sea water, and the above-mentioned powder ion exchange resin are used as filter layers.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】海水中の水棲動物の飼育方法、運搬方法を改良して新鮮な生魚料理を安価に提供する。【解決手段】生魚飼育海水と粉末イオン交換樹脂を接触反応させること及び又はエアーリフト方式濾過装置を適用することで、海水中の水棲動物の死亡率を減少させる薬理作用を持った平均粒径50ミクロン以下の粉末イオン交換樹脂と前記粉末イオン交換樹脂を濾過層とする最適化装置。【選択図】図2