Living in the swift currents and rocky beds of torrential mountain streams, the ku fish has developed agile movements and superb swimming skills. As it darts about, shining with silver-white scales, among the cracks and crevices of its home, it does indeed resemble an energy-charged "exclamation point."
山中溪澗水流速度湍急，河床上大大小小石塊阻擋，在這樣急速的激流中，練就它極優異的泳技，以及矯捷的身手。身披銀白鱗片的高身魚就這樣在強大水流壓力和石縫間迴游低竄，擺首扭尾，十足是一個活蹦亂跳的「驚嘆號」。