Dianema longibarbis Cope, 1872
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
The porthole catfish (Dianema longibarbis), or slender catfish, is a species of freshwater ray-finned fish belonging to the family Callichthyidae and the subfamily Callichthyinae, the armored catfishes. This species is found in South America where it is found in the Amazon River basin of Brazil, Ecuador, Colombia, Bolivia and Peru.
The fish will grow in length up to 8.2 centimetres (3.2 in). It natively inhabits waters with a pH range of 5.5 to 7.5, a hardness of 2–20 DH, and a temperature of 22–26 °C (72–79 °F).
Wikipedia contributors, Porthole catfish; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T19:31:07.372999+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Dianema longibarbis Cope, 1872
- Name authority
- Cope, 1872
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Siluriformes
- Family
- Callichthyidae
- Genus
- Dianema
- 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
- familyCallichthyidae Bonaparte, 1835
- subfamilyCallichthyinae Bonaparte, 1835
- genusDianema Cope, 1871
- speciesDianema longibarbis Cope, 1872
Close classified relatives
These entries share the source’s genus, Dianema. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Dianema urostriatum (Miranda Ribeiro, 1912) | CallichthyidaeChordata | 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 |
|---|---|
| Decapogon verissimi Miranda Ribeiro, 1911 Miranda Ribeiro, 1911 | synonym |
| Callichthys adspersus Steindachner, 1876 Steindachner, 1876 | 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.
- Cope, E. D. (1872). On the fishes of the Ambyiacu River. Proceedings of the Academy of Natural Sciences of Philadelphia, v. 23: 250–294, Pls. 3–16. 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:359TL. Classification follows source parent identifiers. English common names may vary by region.