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Bureya grayling (Thymallus burejensis)

This species described in 2004 is endemic to the Bureya River basin. In the Bureya it is found in the upper reaches of the river and in its tributaries - from the source to the Obdergan River. The Bureya grayling is the largest of all Amur graylings; it can have the length of over 50 centimeters and the weigh over 2 kilograms.

The scales are large, on the body sides they are of greenish-turquoise color with a blued tint. At the head there are small black spots. The gill covers are gray with a turquoise hue. Between the scale rows there are winding yellowish-brown stripes. There is a black spot on the lower jaw. From the pectoral to the ventral fins, two parallel yellow-brown stripes are visible. There is a large scarlet red spot above the ventral fins. The caudal stem, the anal and caudal fins are maroon red. The pelvic fins are with 4-6 longitudinal oblique stripes of red cherry color. The pectoral fins are gray-yellow. Along the base of the dorsal fin there are several rows of spots of different shapes. In the front part they are small, rounded, with a wide light edging, located in 3-4 rows. In the rear part of the fin, the number of rows is greater than 5. The spots on the 3-4 rear membranes have the shape of vertical narrow stripes of different lengths; they do not reach the upper edge of the fin. The edge line of the dorsal fin is missing.

Outwardly, this fish is very similar to the East-Siberian grayling; it is not similar to other species dwelling in the Amur basin. The Bureya grayling dwells in the good size rivers with pools and deep holes, and does not enter small swift creeks.

Ilya Sherbovich