twospine driftfish
Psenes sio Haedrich, 1970
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.
Identity & source status
- Scientific name
- Psenes sio Haedrich, 1970
- Name authority
- Haedrich, 1970
- Common name
- twospine driftfish
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Scombriformes
- Family
- Nomeidae
- Genus
- Psenes
- Extinction status
- Not supplied by this source
Source habitat flags: Marine: yes · Freshwater: no · 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
- orderScombriformes
- familyNomeidae Günther, 1860
- genusPsenes Valenciennes, 1833
- speciesPsenes sio Haedrich, 1970
Close classified relatives
These entries share the source’s genus, Psenes. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Psenes arafurensis Günther, 1889 | NomeidaeChordata | Accepted speciesExtinction status not supplied |
| freckled driftfishPsenes cyanophrys Valenciennes, 1833 | NomeidaeChordata | Accepted speciesExtinction status not supplied |
| blue driftfishPsenes pellucidus Lütken, 1880 | NomeidaeChordata | Accepted speciesExtinction status not supplied |
| Psenes hillii Ogilby, 1915 | NomeidaeChordata | Accepted speciesExtinction status not supplied |
| silver driftfishPsenes maculatus Lütken, 1880 | NomeidaeChordata | 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.
- Haedrich, R. L. (1970). A new species in the nomeid fish genus Psenes from the equatorial eastern Pacific. Breviora, No. 351: 1–7. 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:4NGC7. Classification follows source parent identifiers. English common names may vary by region.