Kryptopterus geminus Ng, 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
Kryptopterus geminus is a species of catfish belonging to the family Siluridae. It can be distinguished from all its congeners, with the exception of Kryptopterus cryptopterus, by the almost flat dorsal profile with no concavity behind the head. This species grows to a length of 17.1 centimetres (6.7 in) SL.
Examples of this distinctively shaped, translucent fish used to be assigned to the long-established species K. cryptopterus but recent studies have shown several small but consistent differences which prompted the erection of this new species. It has been recorded in Cambodia, Laos, Thailand and Vietnam. K. geminus can be distinguished from this close relative by its narrower head, longer snout, longer anal fin and eyes located much more laterally.
Wikipedia contributors, Kryptopterus geminus; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T22:56:45.541693+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Kryptopterus geminus Ng, 2003
- Name authority
- Ng, 2003
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Siluriformes
- Family
- Siluridae
- Genus
- Kryptopterus
- 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
- familySiluridae Rafinesque, 1815
- genusKryptopterus Bleeker, 1857
- speciesKryptopterus geminus Ng, 2003
Close classified relatives
These entries share the source’s genus, Kryptopterus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Kryptopterus baramensis Ng, 2002 | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus bicirrhis (Valenciennes, 1840) | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus hesperius Ng, 2002 | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus lais (Bleeker, 1851) | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus limpok (Bleeker, 1852) | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus minor Roberts, 1989 | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus mononema (Bleeker, 1846) | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus palembangensis (Bleeker, 1852) | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus paraschilbeides Ng, 2003 | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus vitreolus Ng & Kottelat, 2013 | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus schilbeides (Bleeker, 1858) | SiluridaeChordata | Accepted speciesExtinction status not supplied |
| Kryptopterus cheveyi Durand, 1940 | SiluridaeChordata | 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.
- Ng, H. H. (2003). Kryptopterus geminus, a new silurid catfish (Teleostei: Siluridae) from mainland Southeast Asia. Zootaxa, 305: 1–11. https://doi.org/10.11646/zootaxa.305.1.1 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:3RF34. Classification follows source parent identifiers. English common names may vary by region.