Hisonotus notatus Eigenmann & Eigenmann, 1889
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
Hisonotus notatus is a species of freshwater ray-finned fish belonging to the family Loricariidae, the suckermouth armored catfishes, and the subfamily Hypoptopomatinae. the cascudinhos. This catfish is endemic to Brazil where occurs in the São João River and other coastal drainages of the state of Rio de Janeiro draining into Guanabara Bay and Sepetiba Bay. This species reaches a standard length of 4.3 cm (1.7 in). H. notatus was described in 1889 by Carl H. Eigenmann and Rosa Smith Eigenmann with its type locality given as Rio de Janeiro State, Santa Cruz, rio Guandu, Santa Cruz farm - Emperor Pedro II's farm at 22°54'40"S, 43°41'7"W. When Eigenmann and Eigenmann described this species they proposed the new monospecific genus Hisonotus, designating H. notatus as its type species. H. notatus was formerly considered conspecific with H. thayeri, but a 2016 revision by Fernanda Martins and Francisco Langeani redescribed H. notatus and adopted the new name H. thayeri to some populations formerly classified as H. notatus.
Wikipedia contributors, Hisonotus notatus; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T22:48:58.000385+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Hisonotus notatus Eigenmann & Eigenmann, 1889
- Name authority
- Eigenmann & Eigenmann, 1889
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Siluriformes
- Family
- Loricariidae
- Genus
- Hisonotus
- 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
- orderSiluriformes
- familyLoricariidae Rafinesque, 1815
- subfamilyHypoptopomatinae Eigenmann & Eigenmann, 1890
- genusHisonotus Eigenmann & Eigenmann, 1889
- speciesHisonotus notatus Eigenmann & Eigenmann, 1889
Close classified relatives
These entries share the source’s genus, Hisonotus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Hisonotus aky (Azpelicueta, Casciotta, Almirón & Koerber, 2004) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus carreiro Carvalho & Reis, 2011 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus charrua Almirón, Azpelicueta, Casciotta & Litz, 2006 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus depressicauda (Miranda Ribeiro, 1918) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus depressinotus (Miranda Ribeiro, 1918) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus francirochai (Ihering, 1928) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus hungy Azpelicueta, Almirón, Casciotta & Koerber, 2007 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus iota Carvalho & Reis, 2009 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus leucofrenatus (Miranda Ribeiro, 1908) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus maculipinnis (Regan, 1912) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus nigricauda (Boulenger, 1891) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hisonotus notopagos Carvalho & Reis, 2011 | LoricariidaeChordata | 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 |
|---|---|
| Hisonotus minutus Eigenmann & Eigenmann, 1890 Eigenmann & Eigenmann, 1890 | synonym |
| Otocinclus notatus (Eigenmann & Eigenmann, 1889) (Eigenmann & Eigenmann, 1889) | synonym |
| Microlepidogaster notata (Eigenmann & Eigenmann, 1889) (Eigenmann & Eigenmann, 1889) | synonym |
| Microlepidogaster notatus (Eigenmann & Eigenmann, 1889) (Eigenmann & Eigenmann, 1889) | 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.
- Eigenmann, C. H., & Eigenmann, R. S. (1889). Preliminary notes on South American Nematognathi. II. Proceedings of the California Academy of Sciences (Series 2), 2: 28–56. https://doi.org/10.5962/bhl.part.3477 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:3M4VY. Classification follows source parent identifiers. English common names may vary by region.