Red-eyed trout is long, slightly cylindrical, with a slightly flat back and a round abdomen. About body length

30 centimeters. The head is conical and the kiss is blunt. There are 3 rows of hypopharyngeal teeth, and the top is hooked. Big eyes. The scales are round, and the lateral scales are 43 ~ 48. Dorsal fin Ⅲ 7 ~ 8, no hard spines, starting point opposite to ventral fin, gluteal fin Ⅲ 7 ~ 8. The back is dark black and the abdomen is light yellow. There are black patches at the base of scales on the body side and back, which constitute longitudinal stripes on the body side, and erythema on the upper part of eyes. The dorsal fin is dark gray, the trailing edge of the caudal fin is black, and the other fins are gray.