The Manchurian trout is a species of freshwater fish that lives in water at a temperature of less than 20℃. Its skin is covered with small irregular red spots against a silvery-white background. During spawning time, its whole body becomes red, and its dorsal and pectoral fins acquire a rainbow-like luster. It usually feeds on the larvae of insects in water and small fish. In Korea, Manchurian trout are found in the Amnokgang, Dumangang, Cheongcheongang, Daedonggang, and Hangang Rivers and in the upper reaches of the Nakdonggang River. In summer they stay in cooler areas, usually in the upper reaches of a river, while in winter they remain in midstream areas. Since the habitat of Manchurian trout in Jeongamsa Temple is the southernmost part in the world where this fish can live in the well-developed forest as an optimal environment. It is a protected species and has been designated as Natural Monument (No. 73).