Pachypanchax omalonotus (Duméril, 1861)
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
Pachypanchax omalonotus, the powder-blue panchax, is a species of Aplocheilid killifish endemic to Madagascar where it is found on the island of Nosy Be and in the Sambirano River basin and adjacent streams on the mainland. Its natural habitat is rivers.
Wikipedia contributors, Pachypanchax omalonotus; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T23:29:07.445414+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Pachypanchax omalonotus (Duméril, 1861)
- Name authority
- (Duméril, 1861)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Cyprinodontiformes
- Family
- Aplocheilidae
- Genus
- Pachypanchax
- 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
- orderCyprinodontiformes
- familyAplocheilidae Bleeker, 1859
- genusPachypanchax Myers, 1933
- speciesPachypanchax omalonotus (Duméril, 1861)
Close classified relatives
These entries share the source’s genus, Pachypanchax. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Pachypanchax sparksorum Loiselle, 2006 | AplocheilidaeChordata | Accepted speciesExtinction status not supplied |
| Pachypanchax varatraza Loiselle, 2006 | AplocheilidaeChordata | Accepted speciesExtinction status not supplied |
| Pachypanchax arnoulti Loiselle, 2006 | AplocheilidaeChordata | Accepted speciesExtinction status not supplied |
| Pachypanchax patriciae Loiselle, 2006 | AplocheilidaeChordata | Accepted speciesExtinction status not supplied |
| Pachypanchax playfairii (Günther, 1866) | AplocheilidaeChordata | 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 |
|---|---|
| Haplochilus homalonotus (Duméril, 1861) (Duméril, 1861) | synonym |
| Pachypanchax nuchimaculatus (Guichenot, 1866) (Guichenot, 1866) | synonym |
| Panchax homalonotus (Duméril, 1861) (Duméril, 1861) | synonym |
| Panchax nuchimaculatus (Guichenot, 1866) (Guichenot, 1866) | synonym |
| Epiplatys homalonotus (Duméril, 1861) (Duméril, 1861) | synonym |
| Poecilia nuchimaculata Guichenot, 1866 Guichenot, 1866 | synonym |
| Haplochilus andamanicus nuchimaculatus (Guichenot, 1866) (Guichenot, 1866) | synonym |
| Aplocheilus omalonotus (Duméril, 1861) (Duméril, 1861) | synonym |
| Haplochilus nuchimaculatus (Guichenot, 1866) (Guichenot, 1866) | synonym |
| Pachypanchax homalonotus (Duméril, 1861) (Duméril, 1861) | synonym |
| Pachypanchax homolonotus (Duméril, 1861) (Duméril, 1861) | synonym |
| Pachypanchax omalonota (Duméril, 1861) (Duméril, 1861) | synonym |
| Poecilia omalonota Duméril, 1861 Duméril, 1861 | synonym |
| Haplochilus andamanicus homalonotus (Duméril, 1861) (Duméril, 1861) | synonym |
| Aplocheilus homalonotus (Duméril, 1861) (Duméril, 1861) | 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.
- https://www.marinespecies.org/aphia.php?p=taxdetails&id=1020911 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:4BTH6. Classification follows source parent identifiers. English common names may vary by region.