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Species of fish From Wikipedia, the free encyclopedia
Stenodus nelma, known alternatively as the nelma, sheefish, siifish, inconnu or connie, is a commercial species of freshwater whitefish in the family Salmonidae. It is widespread in the Arctic rivers from the Kola Peninsula (White Sea basin) eastward across Siberia to the Anadyr River and also in the North American basins of the Yukon River and Mackenzie River.[2][1][3][4]
Stenodus nelma | |
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Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Salmoniformes |
Family: | Salmonidae |
Genus: | Stenodus |
Species: | S. nelma |
Binomial name | |
Stenodus nelma | |
Synonyms | |
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Stenodus nelma is an anadromous fish, up to 150 centimetres (59 in) in length.[4] The fish has a large mouth with a protruding lower jaw and a high and pointed dorsal fin. It is generally silver in color with a green, blue or brown back. The meat is white, flaky and somewhat oily. An adult fish weighs up to 27 kilograms (60 lb).[5]
The fish eat plankton for their first year of life and then become predators of smaller fish. They live in lakes and rivers and in the brackish water at the outlets of rivers into the ocean. They may migrate more than 1,600 kilometres (1,000 mi) to their upriver spawning grounds, but some populations spend their entire life in fresh water and do not migrate.[5]
Stenodus nelma has previously been considered a subspecies of Stenodus leucichthys (S. leucichthys nelma). The typical Stenodus leucichthys (beloribitsa) is a landlocked Eurasian species restricted to the Caspian Sea basin, and now extinct in the wild.[6][7]
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