Says Tseng: "Silt and sediment from the upper reaches of Hualien River has produced a sharp decline in the river's animal and plant life. On top of this, the waste water discharged from nearby factories has polluted the river and raised the water temperature, so there are a lot fewer ku fish there now."
曾晴賢說：「花蓮溪上遊流沙量大，造成下游的汙積，水生動植物銳減；再加上附近工廠排放的廢水，不但汙染了河川，也升高了水溫，現在高身魚比以前少多了。」