According to records kept during the era of the Japanese occupation, more than fifty kinds of fish, including the golden carp and Xenocypris argentea, had inhabited the Tamsui River for generations. There were an additional fifty species that returned with the currents or occasionally entered the mouth of the river.
根據日據時代的紀錄，世代長住淡水河的淡水魚有石、鯽魚、魚…… 等林林總總五十多種，還有五十多種洄游性及偶爾由河口進入的海水魚類。