Brachymystax lenok (Pallas, 1773)

Open encyclopedia reference

Brachymystax lenok, the sharp-snouted lenok or yeolmogeo, is a salmonid fish distributed in rivers and lakes in northeastern Asia. It formerly included the blunt-snouted lenok, but recent authorities typically treat the latter as a separate species, B. tumensis, based on differences in morphology and genetics. As presently defined, the sharp-snouted lenok is widespread in central and eastern Russia, and also found widely in northern Mongolia, locally in northeastern Kazakhstan (Irtysh Basin) and northeastern China (Amur Basin). The blunt-snouted lenok (B. tumensis) is found widely in southeastern Russia and more locally in northeastern and central parts of the country, as well as northeastern Mongolia (Amur Basin), northern China and Korea. Although the two generally are found in separate areas, there are also regions where their ranges overlap such as the Amur Basin. The sharp-snouted lenok is widespread overall, but some populations, especially in China, have declined due to overexploitation and pollution. This species grows to a total length of 70 cm (28 in).

Wikipedia contributors, Brachymystax lenok; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T19:11:53.195941+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name

Brachymystax lenok (Pallas, 1773)

Name authority

(Pallas, 1773)

Rank

species

Accepted status

accepted

Kingdom

Animalia

Phylum

Chordata

Class

Teleostei

Order

Salmoniformes

Family

Salmonidae

Genus

Brachymystax

Extinction status

Not supplied by this source

Source habitat flags: Marine: no · Freshwater: yes · Terrestrial: no. These do not form a complete habitat description.

Classification family tree

Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.

1. domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
2. kingdomAnimalia
3. phylumChordata
4. subphylumVertebrata
5. infraphylumGnathostomata
6. parvphylumOsteichthyes
7. gigaclassActinopterygii
8. superclassActinopteri
9. classTeleostei
10. orderSalmoniformes
11. familySalmonidae Cuvier, 1816
12. subfamilySalmoninae Cuvier, 1816
13. genusBrachymystax Günther, 1866
14. speciesBrachymystax lenok (Pallas, 1773)

Close classified relatives

These entries share the source’s genus, Brachymystax. They are not necessarily the closest relatives established by molecular evidence.

Browse 141 records assigned to Salmonidae.

Names & synonyms

Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.

Source literature & publication evidence

References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.

1. https://www.marinespecies.org/aphia.php?p=taxdetails&id=1026966 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references

Origins, evidence & remaining research

Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.

Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.

Dataset citation & attribution

This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11

Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.

Stable key: col:MXRW. Classification follows source parent identifiers. English common names may vary by region.