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The grass carp (Ctenopharyngodon idella) is a species of large herbivorous freshwater fish in the family Cyprinidae, native to the Pacific Far East, with a native range stretching from northern Vietnam to the Amur River on the Sino-Russian border. [2] This Asian carp is the only species of the genus Ctenopharyngodon.
Cyprinus rubrofuscus, the Amur carp, is a species of cyprinid fish, and is the wild form of the well-known koi.It is widespread in the fresh waters of eastern Asia, native to China, Korea, Russia, Vietnam and Laos from the Amur to Red River basins, and has also been introduced outside its native range. [1]
Silurus asotus, commonly called the Amur catfish, Japanese common catfish, Far Eastern catfish, and Chinese catfish, is a carnivorous catfish species belonging to the Siluridae family. It lives in widespread distribution in freshwater habitats across East Asia and has a high aquaculture.
The Amur is an important river for the aquatic fauna of Northeast Asia. The river basin is home to a variety of large predatory fish such as northern snakehead, Amur pike, taimen, Amur catfish, predatory carp and yellowcheek, [10] as well as several species of trout and anadromous salmonids.
The Amur carp is a hardy fish, and koi retain that durability. Koi are coldwater fish, but benefit from being kept in the 15–25 °C (59–77 °F) range, and do not react well to long, cold, winter temperatures; their immune systems are very weak below 10 °C (50 °F).
A 3.7 m (12 ft)-long, 500 kg (1,100 lb), 70 year old Kaluga fish which stored around 4 million eggs The Amur river, an important habitat for the Kaluga sturgeon. The kaluga sturgeon is a massive fish, also known as the "river beluga". It has a triangular head with several bony plates.
The modern Japanese Koi fish are a brightly colored species of the Amur carp that have been bred by rice farmers in Japan since the early 19th century. [66] This subspecies of carp plays a significant role in Japanese art, often being depicted as symbols of luck, strength, and tenacity. [ 67 ]
Asian carp is an informal grouping of several species of cyprinid freshwater fishes native to Eurasia, commonly referring to the four East Asian species silver carp, bighead carp, grass carp (a.k.a. white amur) and black carp (a.k.a. black amur), [note 1] which were introduced to North America during the 1970s and now regarded as invasive in the United States.