Coregonus johannae (Wagner, 1910)
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 deepwater cisco (Coregonus johannae) was one of the largest ciscoes in the Great Lakes. Its average length was 30 cm (12 inches) and it was about 1.0 kilogram (2.2 pounds) in weight. Occurring only in Lakes Huron and Michigan, and inhabiting waters between 50 and 150 metres deep, it was difficult to distinguish from other ciscoes and was possibly the same species as the shortjaw cisco (Coregonus zenithicus). The deepwater cisco was distinguished by usually having fewer than 33 gill rakers, relatively long pectoral fins, and unpigmented jaws. It was a silvery colour with a pink or purple lustre and a green or blue back. It spawned in August and September, earlier than most other ciscoes. Not much is known about its specific behaviors. Its diet consisted of Mysis relicta, fingernail clams, and various aquatic insects. Because of its large size, the deepwater cisco was heavily fished commercially.
The main reasons for its extinction was a combination of competition from the invasive alewife, predation by the introduced sea lamprey, and commercial fishing on the Great Lakes.
Wikipedia contributors, Deepwater cisco; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T19:24:07.894052+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Coregonus johannae (Wagner, 1910)
- Name authority
- (Wagner, 1910)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Salmoniformes
- Family
- Salmonidae
- Genus
- Coregonus
- 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
- orderSalmoniformes
- familySalmonidae Cuvier, 1816
- subfamilyCoregoninae Bonaparte, 1845
- genusCoregonus Linnaeus, 1758
- speciesCoregonus johannae (Wagner, 1910)
Close classified relatives
These entries share the source’s genus, Coregonus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Coregonus maxillaris Günther, 1866 | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| Coregonus maraena (Bloch, 1779) | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| Coregonus ladogae Pravdin, Golubev & Belyaeva, 1938 | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| Coregonus megalops Widegren, 1863 | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| Coregonus macrophthalmus Nüsslin, 1882 | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| Coregonus lucinensis Thienemann, 1933 | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| Coregonus fontanae Schulz & Freyhof, 2003 | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| Coregonus fatioi Kottelat, 1997 | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| muksunCoregonus muksun (Pallas, 1814) | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| Coregonus pravdinellus Dulkeit, 1949 | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| houtingCoregonus oxyrinchus (Linnaeus, 1758) | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
| Coregonus nipigon (Koelz, 1925) | SalmonidaeChordata | Accepted speciesExtinction status not supplied |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Argyrosomus johannae Wagner, 1910 Wagner, 1910 | synonym |
| Leucichthys johannae (Wagner, 1910) (Wagner, 1910) | synonym |
| Argyrosomus hoyi Milner, 1874 Milner, 1874 | 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=1307267 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:6B29L. Classification follows source parent identifiers. English common names may vary by region.