臀鳞鱼 TunLingYu

臀鳞鱼,脊索动物门-鱼纲-鲤形目-鲤科。体狭长，稍侧扁。一般长约15厘米，大者可至30厘米。头呈锥形，口下位。下唇肉质，后缘游离，具左右2叶，无明显的中叶，唇后沟不连续，下颌内侧微角质化，但不形成锐利的边缘。须2对，几等长，较眼径略长或相等。吻须的末端到达鼻孔后缘的下方；颉须末端达眼球中部的下方。下咽齿3行，细长，顶端弯曲。鳞细小，腹部自鳃峡至胸鳍末端下方裸露无鳞；侧线鳞较体鳞为大，臀鳍和肛门两侧均有大鳞。背鳍Ⅲ8，不分枝鳍条的硬刺后缘有锯齿。臀鳍Ⅱ5。体背和侧面青灰色，具有多数不规则的小黑斑点，腹部银白色。自然条件下，喜生活于水质清新的江河、水库、湖泊中。人工驯养条件下，能在池塘中饲养。属中小型亚冷水性鱼类，云南特有种。现数量很少。

百度翻译提供：

Buttock scale fish, chordate phylum - ichthya - Cypriniformes - Cyprinidae. The body is long and narrow, slightly flat on the side. It is generally about 15 cm long, and the larger can be up to 30 cm. The head is conical and the mouth is lower. The lower lip is fleshy, the posterior edge is free, with left and right leaves, no obvious middle lobe, the posterior lip groove is discontinuous, and the inner side of the mandible is slightly keratinized, but does not form a sharp edge. Must be 2 pairs, several equal lengths, slightly longer than the eye diameter or equal. The end of the snout whisker reaches below the posterior edge of the nostril; The end of the whisker reaches below the middle of the eyeball. Hypopharyngeal teeth are 3 rows, slender and curved at the top. The scales are small, and the abdomen is exposed from gill isthmus to the end of pectoral fin without scales; The lateral line scale is larger than the body scale, and there are large scales on both sides of the hip fin and anus. Dorsal fin Ⅲ 8, unbranched, with hard spines and serrated trailing edge. Gluteal fin Ⅱ 5. The back and side of the body are cyan gray, with most irregular small black spots, and the abdomen is silvery white. Under natural conditions, people like to live in rivers, reservoirs and lakes with fresh water quality. Under the condition of artificial domestication, it can be raised in the pond. It belongs to small and medium-sized sub cold water fish and is endemic to Yunnan. The current quantity is very small.