Panaqolus nix Cramer & Rapp Py-Daniel, 2015
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
Panaqolus nix is a species of freshwater ray-finned fish belonging to the family Loricariidae, the suckermouth armored catfishes, and the subfamily Hypostominae, the suckermouth catfishes. This catfish occurs in the Madeira River and the Mamoré River in Brazil, as well as the Madre de Dios River drainage basin in Peru. It is reported to have been caught in cofferdams at hydroelectric power plant construction sites in the Madeira River, with most specimens being collected at depths of 3.1 to 11 m (10 to 36 ft) in environments with a strong current. This species reachesa standard length 11.2 cm (4.4 in) and is known to be quite variable in color. Its specific epithet, nix, derives from the Latin word for "snow", referring both to the species' characteristic white spots that are said to resemble snowflakes and the tendency of some individuals to be entirely pale, as if they are covered in snow.
Wikipedia contributors, Panaqolus nix; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T23:29:31.466258+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Panaqolus nix Cramer & Rapp Py-Daniel, 2015
- Name authority
- Cramer & Rapp Py-Daniel, 2015
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Siluriformes
- Family
- Loricariidae
- Genus
- Panaqolus
- 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
- subfamilyHypostominae Kner, 1853
- tribePeckoltini Armbruster & Lujan, 2025
- genusPanaqolus Isbrücker & Schraml, 2001
- speciesPanaqolus nix Cramer & Rapp Py-Daniel, 2015
Close classified relatives
These entries share the source’s genus, Panaqolus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Panaqolus changae (Chockley & Armbruster, 2002) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Panaqolus maccus (Schaefer & Stewart, 1993) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Panaqolus albivermis Lujan, Steele & Velasquez, 2013 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Panaqolus albomaculatus (Kanazawa, 1958) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Panaqolus claustellifer Tan, Souza & Armbruster, 2016 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Panaqolus dentex (Günther, 1868) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Panaqolus gnomus (Schaefer & Stewart, 1993) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Panaqolus nocturnus (Schaefer & Stewart, 1993) | 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.
- Cramer, C. A., & Py-Daniel, L. H. R. (2015). A new species of Panaqolus (Siluriformes: Loricariidae) from the rio Madeira basin with remarkable intraspecific color variation. Neotropical Ichthyology, 13. https://doi.org/10.1590/1982-0224-20140099 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:4C9CS. Classification follows source parent identifiers. English common names may vary by region.