Yellowspotted grayling (Thymallus flavomaculatus)
The yellow-spotted grayling is larger than the Lower-Amur grayling, and often reaches the weight of over half a kilogram, and in the Tumnin River basin it is up to 1 kilogram.
The scale cover is silver or blue-silver. Near the head there are a few black spots. The gill covers are gray with a turquoise hue. Between the rows of scales there are twisting thin orange stripes. From the pectoral to the ventral fins, there are two parallel yellow-brown stripes. Above the ventral fins there are large raspberry-red spots. The pectoral, anal and caudal fins are gray-yellow, and the ventral fins have 5-6 longitudinal oblique cherry-red stripes. The spots on the dorsal fin are small, rounded, with a wide matte border in the shape of 4-5 slightly ascending rows; they do not merge with a narrow edge line of the same color. On the last dorsal fin membranes there is a large yellow-orange spot.
Yellow-spotted grayling lives near the headwaters of mountainous rivers and in the chutes with a large gradient; it is well adapted to the swift current.