Deuterodon oyakawai (Santos & Castro, 2014)
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
Deuterodon oyakawai is a small species of characin endemic to a large river basin along the Atlantic coast in southeast Brazil. It was originally one of three members of the genus Probolodus, but Probolodus is now considered obsolete, synonymized with Deuterodon. Much like other members of Deuterodon, and like some species in related genera, D. oyakawai is a small, silvery fish with fins in some combination of red and clear. It has a defined humeral spot that can be used for identification.
Upon its nomination, congener Deuterodon heterostomus was considered the only member of the genus Probolodus, but D. oyakawai (and D. sazimai) were established therein in 2014. Prior to this, specimens of D. oyakawai were likely mislabeled as D. heterostomus. All three species were moved to the genus Deuterodon upon a phyletic review in 2020. All three species are also noted to perform lepidophagy, which is a specialized feeding behavior that involves eating the scales of other fish.
Wikipedia contributors, Deuterodon oyakawai; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T19:30:27.278369+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Deuterodon oyakawai (Santos & Castro, 2014)
- Name authority
- (Santos & Castro, 2014)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Characiformes
- Family
- Acestrorhamphidae
- Genus
- Deuterodon
- 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
- subfamilyStygichthyinae Géry, 1972
- genusDeuterodon Eigenmann, 1907
- speciesDeuterodon oyakawai (Santos & Castro, 2014)
Close classified relatives
These entries share the source’s genus, Deuterodon. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Deuterodon langei Travassos, 1957 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon parahybae Eigenmann, 1908 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon singularis Lucena & Lucena, 1992 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon supparis Lucena & Lucena, 1992 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon burgerai (Zanata & Camelier, 2009) | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon aphos (Zanata & Akama, 2004) | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon hastatus (Myers, 1928) | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon ribeirae (Eigenmann, 1911) | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon intermedius (Eigenmann, 1908) | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon luetkenii (Boulenger, 1887) | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon iguape Eigenmann, 1907 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Deuterodon longirostris (Steindachner, 1907) | AcestrorhamphidaeChordata | 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 |
|---|---|
| Probolodus oyakawai Santos & Castro, 2014 Santos & Castro, 2014 | 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=1524851 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:D5CXY. Classification follows source parent identifiers. English common names may vary by region.