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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Stomiati
Ordo: Osmeriformes
Superfamilia: Osmeroidea

Familia: Osmeridae
Genus: Hypomesus
Species: H. chishimaensis – H. japonicus – H. nipponensis – H. olidus – H. pretiosus – H. transpacificus
Name

Hypomesus Gill, 1862
References

Hypomesus Gill, 1862 – Taxon details on Integrated Taxonomic Information System (ITIS).

Vernacular names
English: Smallmouth smelts
日本語: ワカサギ属
русский: Корюшка
中文: 日本公魚


Hypomesus is a genus of smelts (Osmeridae), consisting of five species found in the northern hemisphere.
Species

There are currently five recognized species in this genus:[2]

Hypomesus japonicus (Brevoort, 1856)
Hypomesus nipponensis McAllister, 1963 (Japanese smelt)
Hypomesus olidus (Pallas, 1814) (Pond smelt)
Hypomesus pretiosus (Girard, 1854) (Surf smelt)
Hypomesus transpacificus McAllister, 1963 (Delta smelt)

The pond smelt H. olidus is widespread across northeastern Asia, Alaska, and northwestern Canada, while the Delta smelt H. transpacificus is an endangered species of the Sacramento Delta in California. H. chishimaensis was at one time thought to be a separate species, but has since been identified as a population of H. nipponensis.
Hypomesus

H. olidus

H. nipponensis

H. japonicus

H. pretiosus

H. transpacificus

H. transpacificus
Phylogeny of the genus Hypomesus including H. chishimaensis under H. nipponensis.[3][4]
References

Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 363: 560.
Froese, Rainer and Pauly, Daniel, eds. (2012). Species of Hypomesus in FishBase. February 2012 version.
Ilves, K. L. & E. B. Taylor (2007). "Are Hypomesus chishimaensis and H. nipponensis (Osmeridae) distinct species?". Copeia. 2007: 180–185. doi:10.1643/0045-8511(2007)7[180:AHCAHN]2.0.CO;2. S2CID 86738107.
Ilves, K. L. & E. B. Taylor (2008). "Evolutionary and biogeographical patterns within the smelt genus Hypomesus in the North Pacific Ocean". Journal of Biogeography. 35: 48–64. doi:10.1111/j.1365-2699.2007.01782.x. S2CID 4488913.

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