Stenodus leucichthys is a species of freshwater whitefish in the family Salmonidae. In the strict sense its natural distribution is restricted to the Caspian Sea basin, and it is known as beloribitsa (literally meaning "the fish that is white" in Russian). The beloribitsa is now considered extinct in the wild, but survives in cultured stocks. The nelma (Stenodus nelma), a more widespread species of Eurasian and North America, is sometimes considered its subspecies.
Alternatively, the name Stenodus leucichtys has been used in a broader sense, referring to a widespread species composed of two
At a higher level, the genus Stenodus is not phylogenetically distinct from the broader lake whitefish genus Coregonus, although it is phenotypically characterized by a specialized predator morphology.
Description and status
The fish has a large mouth with a protruding lower jaw and a high and pointed
Beloribitsa used to inhabit particularly the
- . Retrieved 19 November 2021.
- Belyaeva, E. S. "Stenodus leucichthys leucichthys". caspianenvironment.org. Archived from the original on 2013-07-03.
- Froese, Rainer and Pauly, Daniel, eds. (2013). Species of Stenodus in FishBase. February 2013 version.
- Eschmeyer F. Catalog of Fishes (Search: Stenodus (species)) California Academy of Sciences. (15 March 2012 version)
- Stenodus leucichthys nelma Illustration of the sister species by N.N. Kondrakov. NOAA Photo Library.