Although fishing has been strictly prohibited in the area, and the brook masu salmon population increased after the fish were released into the river, such a uniform river could not serve to sustain and protect this precious fish.
雖然當地嚴禁非法垂釣，魚兒放流後，溪中魚數也曾增加，但單調的溪流無法掩護國寶魚，學界擔心的事終於到來。