Crossocheilus oblongus Kuhl & Van Hasselt, 1823
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 Siamese algae-eater (Crossocheilus oblongus) is a species of freshwater fish in the carp family, Cyprinidae. This bottom-dwelling tropical fish is found in Mainland Southeast Asia, including the Chao Phraya and Mekong basins as well as the Malay Peninsula. Its natural habitats are streams and rivers as well as flooded forests during the rainy season. The Siamese algae-eater should not be confused with the flying fox (Epalzeorhynchos kalopterus) or the false siamensis (Garra cambodgiensis), lacking the distinctive black bands of the former.
Wikipedia contributors, Siamese algae-eater; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T19:26:31.868154+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Crossocheilus oblongus Kuhl & Van Hasselt, 1823
- Name authority
- Kuhl & Van Hasselt, 1823
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Cypriniformes
- Family
- Cyprinidae
- Genus
- Crossocheilus
- 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
- orderCypriniformes
- familyCyprinidae Rafinesque, 1815
- subfamilyLabeoninae Bleeker, 1859
- genusCrossocheilus Kuhl & van Hasselt, 1823
- speciesCrossocheilus oblongus Kuhl & Van Hasselt, 1823
Close classified relatives
These entries share the source’s genus, Crossocheilus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Crossocheilus pseudobagroides Duncker, 1904 | CyprinidaeChordata | Accepted speciesExtinction status not supplied |
| Crossocheilus tchangi Fowler, 1935 | CyprinidaeChordata | Accepted speciesExtinction status not supplied |
| Crossocheilus langei Bleeker, 1860 | CyprinidaeChordata | Accepted speciesExtinction status not supplied |
| Crossocheilus atrilimes Kottelat, 2000 | CyprinidaeChordata | Accepted speciesExtinction status not supplied |
| Crossocheilus cobitis (Bleeker, 1854) | CyprinidaeChordata | Accepted speciesExtinction status not supplied |
| Crossocheilus gnathopogon Weber & de Beaufort, 1916 | CyprinidaeChordata | 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 |
|---|---|
| Labeo oblongus Valenciennes, 1842 Valenciennes, 1842 | synonym |
| Crossocheilus siamensis (Smith, 1931) (Smith, 1931) | synonym |
| Crossochilus oblongus Kuhl & Van Hasselt, 1823 Kuhl & Van Hasselt, 1823 | synonym |
| Epalzeorhynchus siamensis Smith, 1931 Smith, 1931 | synonym |
| Epalzeorhynchos siamensis Smith, 1931 Smith, 1931 | 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.
- van Hasselt, J. C. (1823). Uittreksel uit een’ brief van den Heer J. C. van Hasselt, aan den Heer C. J. Temminck, geschreven uit Tjecande, Residentie Bantam, den 28sten December 1822. Algemeene Konst- En Letter-Bode Voor Het Jaar II Deel, (no. 35): 130–133. 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:6BHKY. Classification follows source parent identifiers. English common names may vary by region.