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The Arctic cisco (Coregonus autumnalis), also known as Arctic omul (Russian: Омуль), is an anadromous species of freshwater whitefish that inhabits the Arctic parts of Siberia especially Yenisey Gulf. It can also be found in Alaska and Canada.
The ranges of the three cisco species above extend across Beringia to the Asian coasts. Of those the Arctic cisco and least cisco (=sardine cisco) are widespread through northern Siberia. In the inland waters of northern Europe, the European cisco or vendace (Coregonus albula) replaces the Siberian sardine cisco. Some of the cisco lineages are ...
The omul has traditionally been regarded as a subspecies of the Arctic cisco Coregonus autumnalis.However, recent genetic studies have shown it actually belongs to the circumpolar Coregonus lavaretus-clupeaformis complex of lake whitefishes, which also has other members in Lake Baikal, [1] and it is now considered its own species within Coregonus. [2]
Most Coregonus species inhabit lakes and rivers, and several species, including the Arctic cisco (C. autumnalis), the Bering cisco (C. laurettae), and the least cisco (C. sardinella) are anadromous, moving between salt water and fresh water.
Coregonus Linnaeus, 1758 – whitefishes and ciscoes, which according to some authors number more than 60 species. [5] There are differing opinions on the classification of some species within the genus and the overall number of species. [2] Some species in Arctic regions of Asia and North America forage in marine waters. [2]
In scientific literature and national biodiversity and conservation assessments, the Irish pollan are usually classified within the species Coregonus autumnalis. That is a widespread anadromous whitefish which inhabits coastal waters and rivers of Arctic Siberia, Alaska, and Canada and is there known as the Arctic cisco or Siberian omul.
Cold-stunned iguana crawls away after falling from tree. When temperatures stay low long enough, NWS Miami tends to issue "Falling iguana alerts" warning residents to watch out for falling lizards.
The Bering cisco or Lauretta whitefish (Coregonus laurettae) is a freshwater whitefish found in Alaska and part of Russia. It is often considered to be the same species as the more common Arctic cisco ( Coregonus autumnalis ).