Hemipsilichthys nimius Pereira, Reis, Souza & Lazzarotto, 2003
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
Hemipsilichthys nimius is a species of freshwater ray-finned fish belonging to the family Loricariidae, the armoured suckermouth catfishes, and the subfamily Delturinae, the primitive suckermouth catfishes. The species is only known from two small rivers in Rio de Janeiro State, Brazil: the Perequê-Áçu and the Taquari.
This is a fairly typical loricariid with a broad head and large mouth used for adhesion to rocks in fast-flowing water. Colouring is generally pale brown with darker blotches with standard length up to 10.5 centimetres (4.1 in). It can be distinguished from all its congeners by the anatomy of the dorsal fin: eight branched rays are present instead of seven and there is a membrane connecting the last ray to the back of the fish.
Wikipedia contributors, Hemipsilichthys nimius; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T22:46:49.743868+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Hemipsilichthys nimius Pereira, Reis, Souza & Lazzarotto, 2003
- Name authority
- Pereira, Reis, Souza & Lazzarotto, 2003
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Siluriformes
- Family
- Loricariidae
- Genus
- Hemipsilichthys
- 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
- subfamilyDelturinae Armbruster, Reis & Pereira, 2006
- genusHemipsilichthys Eigenmann & Eigenmann, 1889
- speciesHemipsilichthys nimius Pereira, Reis, Souza & Lazzarotto, 2003
Close classified relatives
These entries share the source’s genus, Hemipsilichthys. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Hemipsilichthys papillatus Pereira, Oliveira & Oyakawa, 2000 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Hemipsilichthys gobio (Lütken, 1874) | LoricariidaeChordata | 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.
- Pereira, E. H., Reis, R. E., Souza, P. F., & Lazzarotto, H. (2003). A new species of the loricariid catfish genus Hemipsilichthys from southern Rio de Janeiro coastal rivers, southeastern Brazil (Teleostei: Siluriformes). Zootaxa, 285. https://doi.org/10.11646/zootaxa.285.1.1 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:3KRZG. Classification follows source parent identifiers. English common names may vary by region.