Cottus pollux Günther, 1873
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Open encyclopedia reference
The Japanese fluvial sculpin (Cottus pollux) is a species of freshwater ray-finned fish belonging to the family Cottidae, the typical sculpins. It is endemic to Japan, where it inhabits mountain streams in Honshu, Shikoku, and Kyushu. It reaches a maximum length of 15.0 cm (5.9 in). It is also known as the Japanese bullhead.
Wikipedia contributors, Japanese fluvial sculpin; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T19:25:36.206207+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Cottus pollux Günther, 1873
- Name authority
- Günther, 1873
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Perciformes
- Family
- Cottidae
- Genus
- Cottus
- 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.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- gigaclassActinopterygii
- superclassActinopteri
- classTeleostei
- orderPerciformes
- suborderCottoidei
- familyCottidae Bonaparte, 1831
- genusCottus Linnaeus, 1758
- speciesCottus pollux Günther, 1873
Close classified relatives
These entries share the source’s genus, Cottus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| shorthead sculpinCottus confusus Bailey & Bond, 1963 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| Cottus chattahoochee Neely, Williams & Mayden, 2007 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| Cottus ohmiensis Watanabe, 1960 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| coastrange sculpinCottus aleuticus Gilbert, 1896 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| prickly sculpinCottus asper Richardson, 1836 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| Cottus baileyi Robins, 1961 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| mottled sculpinCottus bairdii Girard, 1850 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| Cottus beldingii Eigenmann & Eigenmann, 1891 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| Cottus bendirei (Bean, 1881) | CottidaeChordata | Accepted speciesExtinction status not supplied |
| Cottus czerskii Berg, 1913 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| Cottus dzungaricus Kottelat, 2006 | CottidaeChordata | Accepted speciesExtinction status not supplied |
| Cottus gratzianowi Sideleva, Naseka & Zhidkov, 2015 | CottidaeChordata | Accepted speciesExtinction status not supplied |
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.
- Günther, A. (1873). Report on a collection of fishes from China. Annals and Magazine of Natural History (Series 4), v. 12 (no. 69) (art. 31): 239–250. 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:6B8DG. Classification follows source parent identifiers. English common names may vary by region.