Tanichthys albonubes

Tang fish is a very small freshwater fish. The largest male adult fish is about 25 mm in length, and the female fish is only about 30 mm. The body is small, long and flat on the sides, and the body height is approximately equal to the head length. The abdomen is round with no abdominal ribs. The muzzle is short and blunt. Mouth is small, sub-superior position. The cleft of the mouth is downward sloping, the mandible is protruding, there is no tumor-like process at the front end, and there is no notch in the center of the maxilla. No mouth or whiskers. The eyes are large and positioned upward. The head length behind the eyes is significantly longer than the snout length. The distance between the eyes is approximately twice the length of the muzzle. The body is covered with round scales, the scales are medium in size, and there is no lateral line.
Dorsal fin ii−6, anal fin iii−8, pectoral fin i−17～18. No lateral line, 30 to 32 longitudinal scales. There is a blue-black vertical stripe

Distributed in China (Hainan, Guangdong) and Vietnam; in China, it is mainly distributed in some mountain streams in the Pearl River Delta. It has been raised in Hong Kong, Macau, China, and Europe.
Tang fish mostly live in clear streams in mountainous areas.

The Latin name of the minnow is Tanichthys albonubes, and its foreign name is White Cloud Mountain Minnow. There is no subspecies.

The minnow is bold, lively and gentle. Although distributed in the subtropics, it is still cold-resistant and can still live normally when the water temperature drops to 5℃. It is an omnivorous small fish that mainly feeds on zooplankton and humus.

Tang fish lays eggs and reproduces when the water temperature is about 23.3℃. The eggs are non-basic and sinking eggs. The fry hatch about 2 days after spawning. When the yolk is exhausted at about 35 days of hatching, it can actively seek food. The spawning period is from spring to autumn. Parents can reproduce more than twice in spring and summer. Female parents only lay dozens of eggs at a time.

Listed in the "Red List of Endangered Species of the World Conservation Union" (IUCN 2010 ver 3.1) - Data Deficient (DD).

Listed in the "China Biodiversity Red List - Vertebrate Volume" (May 20, 2015) - Critically Endangered (CR).

Listed in the second level of China's 2021 edition of the "National Key Protected Wildlife List" (only for wild populations).

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