lake chub
Couesius plumbeus (Agassiz, 1850)
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.
Couesius plumbeus (Agassiz 1850), common name: lake chub
Konrad P. Schmidt · Public domain · Image sourceProvider-generated thumbnail requested at 320 pixels; no local editing Local WebP display rendition; resized without cropping.
Open encyclopedia reference
The lake chub (Couesius plumbeus) is a species of freshwater ray-finned fish belonging to the family Leuciscidae, which includes the daces, Eurasian minnows and related species. This fish is found in Canada and in parts of the United States. Of all North American minnows, it is the one with the northernmost distribution. Its genus, Couesius, is considered monotypic today. The genus was named after Elliott Coues, who collected the holotype specimen.
Wikipedia contributors, Lake chub; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T02:47:17.897074+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Couesius plumbeus (Agassiz, 1850)
- Name authority
- (Agassiz, 1850)
- Common name
- lake chub
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Cypriniformes
- Family
- Cyprinidae
- Genus
- Couesius
- 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
- orderCypriniformes
- familyCyprinidae Rafinesque, 1815
- subfamilyLeuciscinae Bonaparte, 1835
- genusCouesius Jordan, 1878
- speciesCouesius plumbeus (Agassiz, 1850)
Close classified relatives
No other member of this genus is present in the selected snapshot.
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Couesius plumbeus rubrilateralis Cox, 1901 Cox, 1901 | synonym |
| Hybopsis plumbea greeni (Jordan, 1893) (Jordan, 1893) | synonym |
| Leucosomus dissimilis Girard, 1856 Girard, 1856 | synonym |
| Couesius greeni Jordan, 1893 Jordan, 1893 | synonym |
| Couesius prosthemius (Cope, 1867) (Cope, 1867) | synonym |
| Hybopsis plumbea (Agassiz, 1850) (Agassiz, 1850) | synonym |
| Nocomis milneri Jordan, 1877 Jordan, 1877 | synonym |
| Couesius plumbeus greeni Ahl, 1926 Ahl, 1926 | synonym |
| Ceratichthys prosthemius Cope, 1867 Cope, 1867 | synonym |
| Gobio plumbeus Agassiz, 1850 Agassiz, 1850 | synonym |
| Hybopsis plumbea dissimilis (Girard, 1856) (Girard, 1856) | ambiguous synonym |
| Couesius plumbeus plumbeus (Agassiz, 1850) (Agassiz, 1850) | synonym |
| Couesius adustus Woolman, 1894 Woolman, 1894 | synonym |
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.
- https://www.marinespecies.org/aphia.php?p=taxdetails&id=567529 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.
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:YZHV. Classification follows source parent identifiers. English common names may vary by region.