Parahucho perryi (Brevoort, 1856)

Open encyclopedia reference

The Sakhalin taimen (Parahucho perryi, syn. Hucho perryi), also known as the Japanese huchen or stringfish (Japanese: 伊富/イトウ, romanized: itō), is a large species of salmonid freshwater fish in Northeast Asia, found in the lakes and large rivers of Primorsky, Khabarovsk, Sakhalin and Kuril Islands of Far Eastern Russia, as well as Hokkaido of Japan. Although often placed in the genus Hucho, molecular phylogenetic and other evidence has shown that it belongs in its own monotypic genus Parahucho.

The population has been in general decline for a century at least, with contributory factors including degradation of the environment by logging, oil exploration and change of land use to agriculture. The fish is caught by commercial fishing as bycatch, by recreational anglers and illegally by poaching, and present populations are estimated to be less than 5% of their historic levels. The International Union for Conservation of Nature has rated the fish as being critically endangered.

The earliest known fossils of the genus are from the mid-late Miocene-aged Agnevo Formation of Sakhalin Island.

Wikipedia contributors, Sakhalin taimen; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T23:31:31.252395+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name

Parahucho perryi (Brevoort, 1856)

Name authority

(Brevoort, 1856)

Rank

species

Accepted status

accepted

Kingdom

Animalia

Phylum

Chordata

Class

Teleostei

Order

Salmoniformes

Family

Salmonidae

Genus

Parahucho

Extinction status

Not supplied by this source

Source habitat flags: Marine: yes · 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. genusParahucho Vladykov, 1963
14. speciesParahucho perryi (Brevoort, 1856)

Close classified relatives

No other member of this genus is present in the selected snapshot.

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=320038 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:75PXN. Classification follows source parent identifiers. English common names may vary by region.