Metynnis argenteus Ahl, 1923
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
Metynnis argenteus is a species of freshwater ray-finned fishes belonging to the family Serrasalmidae, which includes the pacus, piranhas and related fishes. This fish is endemic to the Tapajós River Basin in Brazil. It is one of the species known in the aquarium trade as the "silver dollar". M. argenteus is generally considered the archetypal silver dollar, although it and the very similar M. hypsauchen frequently have been confused.
Wikipedia contributors, Metynnis argenteus; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T23:11:18.427044+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Metynnis argenteus Ahl, 1923
- Name authority
- Ahl, 1923
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Characiformes
- Family
- Serrasalmidae
- Genus
- Metynnis
- 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
- familySerrasalmidae Bleeker, 1859
- subfamilySerrasalminae Bleeker, 1859
- genusMetynnis Cope, 1878
- speciesMetynnis argenteus Ahl, 1923
Close classified relatives
These entries share the source’s genus, Metynnis. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Metynnis altidorsalis Ahl, 1923 | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis cuiaba Pavanelli, Ota & Petry, 2009 | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis guaporensis Eigenmann, 1915 | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis lippincottianus (Cope, 1870) | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis luna Cope, 1878 | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis maculatus (Kner, 1858) | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis orinocensis (Steindachner, 1908) | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis fasciatus Ahl, 1931 | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis hypsauchen (Müller & Troschel, 1844) | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis longipinnis Zarske & Géry, 2008 | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis mola Eigenmann & Kennedy, 1903 | SerrasalmidaeChordata | Accepted speciesExtinction status not supplied |
| Metynnis otuquensis Ahl, 1923 | SerrasalmidaeChordata | 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 |
|---|---|
| Metynnis eigenmanni Ahl, 1923 Ahl, 1923 | 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.
- Ahl, E. (1923). Eine Revision de Characiniden-Gattung Metynnis. Ichthyologische Mitteilungen, I. Mitteilungen Aus Dem Zoologischen Museum in Berlin, 11 (1): 15–31. 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:42KB9. Classification follows source parent identifiers. English common names may vary by region.