Nematocharax venustus Weitzman, Menezes & Britski, 1986
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
Nematocharax venustus is a species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. This species is endemic to Brazil, where it is found in the Jequitinhonha River basin. The males of this species can reach a length of 5.1 centimetres (2.0 in) SL while the females only grow to 3.5 centimetres (1.4 in) SL.
Wikipedia contributors, Nematocharax venustus; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T23:17:54.237754+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Nematocharax venustus Weitzman, Menezes & Britski, 1986
- Name authority
- Weitzman, Menezes & Britski, 1986
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Characiformes
- Family
- Acestrorhamphidae
- Genus
- Nematocharax
- 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
- familyAcestrorhamphidae Eigenmann, 1907
- subfamilyStichonodontinae Eigenmann, 1910
- genusNematocharax Weitzman, Menezes & Britski, 1986
- speciesNematocharax venustus Weitzman, Menezes & Britski, 1986
Close classified relatives
These entries share the source’s genus, Nematocharax. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Nematocharax costai Bragança, Barbosa & Mattos, 2013 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Nematocharax varii Barreto, Silva, Batalha-Filho, Affonso & Zanata, 2018 | AcestrorhamphidaeChordata | 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.
- Weitzman, S. H., Menezes, N. A., & Britski, H. A. (1986). Nematocharax venustus, a new genus and species of fish from the Rio Jequitinhonha, Minas Gerais, Brazil. Proceedings of the Biological Society of Washington, 99 (2): 335–346. 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:466SW. Classification follows source parent identifiers. English common names may vary by region.