Iceland stickleback
Gasterosteus islandicus Sauvage, 1874
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 Icelandic threespine stickleback (Gasterosteus islandicus) is a freshwater fish, and one of the few vertebrate species endemic to Iceland. In some literature it is considered as a subspecies of G. aculeatus, though several authorities offer it full species status. It was first described by French biologist Henri Émile Sauvage in 1874.
Wikipedia contributors, Icelandic threespine stickleback; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T07:41:04.804466+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Gasterosteus islandicus Sauvage, 1874
- Name authority
- Sauvage, 1874
- Common name
- Iceland stickleback
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Perciformes
- Family
- Gasterosteidae
- Genus
- Gasterosteus
- 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
- suborderGasterosteoidei
- familyGasterosteidae Bonaparte, 1831
- genusGasterosteus Linnaeus, 1758
- speciesGasterosteus islandicus Sauvage, 1874
Close classified relatives
These entries share the source’s genus, Gasterosteus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| BurnstickleGasterosteus aculeatus Linnaeus, 1758 | GasterosteidaeChordata | Accepted speciesExtinction status not supplied |
| Gasterosteus crenobiontus Băcescu & Mayer, 1956 | GasterosteidaeChordata | Accepted speciesExtinction status not supplied |
| Gasterosteus nipponicus Higuchi, Sakai & Goto, 2014 | GasterosteidaeChordata | Accepted speciesExtinction status not supplied |
| blackspotted stickelbackGasterosteus wheatlandi Putnam, 1867 | GasterosteidaeChordata | Accepted speciesExtinction status not supplied |
| Gasterosteus microcephalus Girard, 1854 | GasterosteidaeChordata | 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.
- Sauvage, H.-E. (1874). Révision des espèces du groupe des Épinoches. Nouvelles Archives Du Muséum d’Histoire Naturelle, Paris, v. 10: 5–36, Pl. 1. 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:3FCM3. Classification follows source parent identifiers. English common names may vary by region.