Thymallus yaluensis | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Salmoniformes |
Family: | Salmonidae |
Genus: | Thymallus |
Species: | T. yaluensis
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Binomial name | |
Thymallus yaluensis T. Mori, 1928
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Thymallus yaluensis, also known as Yalu grayling, is a putative species of freshwater fish, a grayling in the salmon family Salmonidae. It is endemic to the upper Yalu River in Korea, on the Chinese border.[1]
Thymallus yaluensis is a small fish, the maximum recorded length is 20 cm (8 in).[1] "It has the most beautiful form and fins of a freshwater fish" in Korea.[1]
Some confusion exists about the identity of T. yaluensis. It is very similar in form to the Arctic grayling T. arcticus, and has mostly been treated as a subspecies, T. a. yaluensis,[2] although FishBase treats it as an independent species.[1] According to mitochondrial DNA, it is, however, inseparable from the Amur grayling T. grubii, and was suggested to be a junior synonym of that.[3]
Confusingly, it has also been reported from widely separate regions including Siberia, the Alps in Europe, and the northern Mississippi River drainage in North America.[citation needed]