Insperanos nattereri (Steindachner, 1876)
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
Insperanos is a monospecific genus of freshwater ray-finned fish belonging to the family Anostomidae, the toothed headstanders. The only species in this genus is Insperanos nattereri, which is found in the Rio Negro, Aleixo Lake, and the central Amazon basin in Brazil. It is the only member of the genus Insperanos. Prior to 2021, it was classified in the large genus Leporinus, but was moved to its own monotypic genus in 2021 after a phylogenetic analysis found it to represent an evolutionarily basal member of the subfamily. It is thought to be a relatively ancient genus, having diverged from the rest of the Leporininae during the Late Eocene, about 37 million years ago.
Wikipedia contributors, Insperanos; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T22:54:45.920063+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Insperanos nattereri (Steindachner, 1876)
- Name authority
- (Steindachner, 1876)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Characiformes
- Family
- Anostomidae
- Genus
- Insperanos
- 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
- orderCharaciformes
- suborderCharacoidei
- familyAnostomidae Günther, 1864
- subfamilyLeporininae Eigenmann, 1912
- genusInsperanos Assega, Sidlauskas & Birindelli, 2021
- speciesInsperanos nattereri (Steindachner, 1876)
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 |
|---|---|
| Leporinus nattereri Steindachner, 1876 Steindachner, 1876 | synonym |
| Anostomoides passionis Santos & Zuanon, 2006 Santos & Zuanon, 2006 | synonym |
| Anostomoides nattereri (Steindachner, 1876) (Steindachner, 1876) | 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=1846812 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:QPGS8. Classification follows source parent identifiers. English common names may vary by region.