Acestridium dichromum Retzer, Nico & Provenzano, 1999
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
Acestridium dichromum is a species freshwater ray-finned fishes belonging to the family Loricariidae, the mailed catfishes, and the subfamily Hypoptopomatinae, the cascudinhos. This catfish occurs in tributaries of the upper Orinoco in Colombia and Venezuela, as well as in the upper Rio Negro drainage in Venezuela. There are records from Brazil but these are treated as unconfirmed. This species recahes a standard length of 6.3 cm (2.5 in).
Wikipedia contributors, Acestridium dichromum; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T18:56:25.776180+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Acestridium dichromum Retzer, Nico & Provenzano, 1999
- Name authority
- Retzer, Nico & Provenzano, 1999
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Siluriformes
- Family
- Loricariidae
- Genus
- Acestridium
- 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
- genusAcestridium Haseman, 1911
- speciesAcestridium dichromum Retzer, Nico & Provenzano, 1999
Close classified relatives
These entries share the source’s genus, Acestridium. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Acestridium discus Haseman, 1911 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Acestridium gymnogaster Reis & Lehmann A., 2009 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Acestridium martini Retzer, Nico & Provenzano, 1999 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Acestridium triplax Rodríguez & Reis, 2007 | 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.
- Retzer, M. E., Nico, L. G., & Provenzano, F. (1999). Two new species of Acestridium (Siluriformes: Loricariidae) from southern Venezuela, with observations on camouflage and color change. Ichthyological Exploration of Freshwaters, 10. 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:958H. Classification follows source parent identifiers. English common names may vary by region.