Long-necked medaka (Vietnamese Giraffe Loach, scientific name: Leptobotia rubripinnis) is a freshwater fish of the genus Cyprinidae (Cyprinidae) Long-necked medaka (Leptobotia) in the order Cyprinidae (Cypriniformes). It is named after its dark markings similar to giraffes on its body. It is a rare freshwater fish that is unique to Southeast Asia (especially Vietnam).

Smith's barbus scientific name: Puntius smithi is a small freshwater fish of the genus Cyprinidae, named after it was first described by British ichthyologist John Smith in the 19th century. This species is mainly distributed in the tropical freshwater watershed of Southeast Asia. It is a colorful and adaptable group in the Cyprinidae, and it is also one of the common species in the ornamental fish market. Inhabit in clear streams, rivers or lakes at an altitude of 50-500 meters, preferring slower water flow. It feeds mainly on algae (such as diatoms, green algae), organic debris and small invertebrates on rock surfaces.

The fine-mouthed light-lip fish (Acrossocheilus labiatus, commonly known as "Slender mouth Almighty") is a small freshwater fish of the carp family light-lip fish. because of its slender mouth, sharp snout and strong ecological adaptability, it is called "all-round hunter" by mountain fishermen ". This species is mainly distributed in clear streams in the mountains of southern China and Southeast Asia. It is mainly distributed in the mountain streams in the Yangtze River Basin and south of China, as well as in the mountains of Laos and northern Vietnam in Southeast Asia; it inhabits clear streams or tributaries at an altitude of 500-2000 meters.

Reticulated ear lip barbus (Crossocheilus reticulatus) is a small freshwater fish of the genus Cyprinidae ear lip barbus, named for its reticular markings on its side. This species is mainly distributed in clear streams in the mountains of Southwest China and Southeast Asia. It is a strong adaptability group in the Cyprinidae and an important species in the study of freshwater ecology in mountainous areas. It is mainly distributed in mountain streams in the Yangtze River basin and south of China, as well as in the mountains of Laos and northern Vietnam in Southeast Asia. It inhabits clear streams or tributaries with an altitude of 500-2000 meters and prefers shallow water areas with rapid water flow and gravel or rock bottom.

The scientific name of the multi-scale white turtle: Onychostoma macrolepis, a freshwater fish of the genus Cyprinidae, is one of the important economic fishes in the rivers of southern China. It is named after the large and closely arranged body scales. It is mainly distributed in the middle and upper reaches of the Yangtze River in China (such as Jinsha River, Minjiang River and Jialing River), the upper reaches of the Pearl River (Xijiang River and Beijiang River) and the Lancang River Basin; it is only found in the Red River Basin in northern Vietnam. It inhabits mountain rivers at an altitude of 300-1500 meters, prefers clear waters with turbulent currents and gravel or sandy bottom, and often clusters in the middle and lower levels.

Grass carp (Ctenopharyngodon Idella) is a fish animal of the genus Grass Carp in the family Cyprinidae. Grass carp is long, slightly cylindrical, with flat tail, round abdomen and blunt head. The end of the mouth is curved and does not need to be. The maxilla is slightly longer than the mandible. The eye is small and the eye diameter is smaller than the kiss length. The hypopharyngeal teeth are comb-shaped with transverse furrows on the tooth side. Scales of medium size, lateral scales; The body is tea yellow, the abdomen is gray, the chest and ventral fins are slightly gray yellow, and other fins are dark. [15] Because of its staple food water plants, hence the name. [16] together with herring, silver carp and bighead carp are called "the four major fish".

Carp (scientific name: Cyprinus carpio, Cyprinidae) is one of the most widely distributed and economically valuable freshwater fishes in the Cyprinidae. It is widely distributed in rivers, lakes and reservoirs in Eurasia. It has been domesticated by humans for more than 2000 years because of its strong adaptability and high fecundity, and is known as "the cornerstone of freshwater culture". Eurasia temperate to tropical freshwater basins, such as the Yellow River, Yangtze River, Volga River, Danube River. Freshwater ecosystems in North America, Australia and other places, some species become invasive species (such as koi flooding in North America).

It is a fish species that lives in freshwater rivers in Europe and belongs to the Cyprinidae family. Known for its unique tentacles, which are located on both sides of the fish's mouth and are used to detect food and sense the surrounding environment. The body is usually elongated, with flattened sides and colors ranging from olive green to dark brown. The abdomen is usually silver white. Mainly inhabiting clear and flowing rivers, especially in areas with gravel or sandy bottoms. It is a benthic fish that feeds on benthic invertebrates, including insect larvae, crustaceans, and mollusks. Widely distributed in Europe, it has high requirements for water quality. It is also a target fish species for fishing enthusiasts.

It is a large freshwater fish species unique to North America, belonging to the Cyprinidae family. Large in size, it is one of the largest fish species in freshwater. Flat body, wide head, with a large mouth filled with tiny teeth, adapted to their omnivorous habits of feeding on plankton, insects, crustaceans, and other small fish. Widely distributed, it can be found in rivers, lakes, and reservoirs from the prairie provinces of Canada to the Midwest and Southern states of the United States. I like to inhabit water bodies with slow water flow and sediment at the bottom. Such environments are rich in food and suitable for growth and reproduction. It is one of the favorite target fish species for fishing enthusiasts.

Long snout resembling a catfish, with 3, 7 dorsal fin strips; Pectoral fin strips 1, 14; Abdominal fin strips 1, 7; Hip fin strips 3, 6. Gill rakes 10-12. Two rows of swallowing teeth, 2.5 to 5.2. Side scale 42 [5/(3-V)] 43; Dorsal fin anterior scales 11-12; 12 scales around the caudal peduncle.