Hemitrygon laosensis (Roberts & Karnasuta, 1987)
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 Mekong freshwater stingray, Hemitrygon laosensis, is a species of stingray in the family Dasyatidae, restricted to the Mekong and Chao Phraya Rivers in Laos and Thailand; the occurrence in Chao Phraya is considered an introduction. Measuring up to 62 cm (24 in) across, this ray has an oval pectoral fin disc, a tail with both upper and lower fin folds, and a midline row of spine-like dermal denticles. A characteristic feature of this species is its bright orange underside. The Mekong freshwater stingray preys on invertebrates and is aplacental viviparous. It has been assessed as Endangered by the International Union for Conservation of Nature (IUCN), as it is threatened by overfishing and habitat degradation.
Wikipedia contributors, Mekong freshwater stingray; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T22:46:57.919326+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Hemitrygon laosensis (Roberts & Karnasuta, 1987)
- Name authority
- (Roberts & Karnasuta, 1987)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Elasmobranchii
- Order
- Myliobatiformes
- Family
- Dasyatidae
- Genus
- Hemitrygon
- 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
- parvphylumChondrichthyes
- classElasmobranchii
- subclassNeoselachii
- infraclassBatoidea
- orderMyliobatiformes
- familyDasyatidae Jordan & Gilbert, 1879
- genusHemitrygon Müller & Henle, 1838
- speciesHemitrygon laosensis (Roberts & Karnasuta, 1987)
Close classified relatives
These entries share the source’s genus, Hemitrygon. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Hemitrygon fluviorum (Ogilby, 1908) | DasyatidaeChordata | Accepted speciesExtinction status not supplied |
| Hemitrygon izuensis (Nishida & Nakaya, 1988) | DasyatidaeChordata | Accepted speciesExtinction status not supplied |
| Hemitrygon navarrae (Steindachner, 1892) | DasyatidaeChordata | Accepted speciesExtinction status not supplied |
| Hemitrygon parvonigra (Last & White, 2008) | DasyatidaeChordata | Accepted speciesExtinction status not supplied |
| Hemitrygon yemenensis Moore, Last & Naylor, 2020 | DasyatidaeChordata | Accepted speciesExtinction status not supplied |
| Hemitrygon bennettii (Müller & Henle, 1841) | DasyatidaeChordata | Accepted speciesExtinction status not supplied |
| Hemitrygon longicauda (Last & White, 2013) | DasyatidaeChordata | Accepted speciesExtinction status not supplied |
| Hemitrygon sinensis (Steindachner, 1892) | DasyatidaeChordata | 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 |
|---|---|
| Dasyatis laoensis Roberts & Karnasuta, 1987 Roberts & Karnasuta, 1987 | synonym |
| Dasyatis laosensis Roberts & Karnasuta, 1987 Roberts & Karnasuta, 1987 | synonym |
| Amphotistius laosensis (Roberts & Karnasuta, 1987) (Roberts & Karnasuta, 1987) | 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=1524126 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:3KTRF. Classification follows source parent identifiers. English common names may vary by region.