Opsariichthys pachycephalus Günther, 1868
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
Opsariichthys pachycephalus is a species of freshwater ray-finned fish belonging to the family Xenocyprididae, the East Asian minnows or sharpbellies. This species is endemic to Taiwan. It is one of the most common minnows of Taiwan, found in the entire western part of the island from sea level to 1200 m elevation. It is a small species reaching a maximum length of 16 cm (6.3 in) TL.
Wikipedia contributors, Opsariichthys pachycephalus; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T23:26:11.271098+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Opsariichthys pachycephalus Günther, 1868
- Name authority
- Günther, 1868
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Cypriniformes
- Family
- Cyprinidae
- Genus
- Opsariichthys
- 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
- subfamilyXenocypridinae Günther, 1868
- genusOpsariichthys Bleeker, 1863
- speciesOpsariichthys pachycephalus Günther, 1868
Close classified relatives
These entries share the source’s genus, Opsariichthys. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Opsariichthys songmaensis Nguyen & Nguyen, 2000 | CyprinidaeChordata | Accepted speciesExtinction status not supplied |
| Opsariichthys duchuunguyeni Huynh & Chen, 2014 | CyprinidaeChordata | Accepted speciesExtinction status not supplied |
| Opsariichthys evolans (Jordan & Evermann, 1902) | CyprinidaeChordata | Accepted speciesExtinction status not supplied |
| Opsariichthys macrolepis (Yang & Hwang, 1964) | 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 |
|---|---|
| Zacco pachycephalus (Günther, 1868) (Günther, 1868) | synonym |
| Zacco taiwanensis Chen, 1982 Chen, 1982 | 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.
- Günther, A. (1868). Catalogue of the fishes in the British Museum. Catalogue of the Physostomi fish containing the families Heteropygii, Cyprinidae, Gonorhynchidae, Hyodontidae, Osteoglossidae, Clupeidae,... [thru]... Halosauridae, in the collection of the British Museum. Catalogue of the Fishes in the British Museum., v. 7: i–xx + 1–512. 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:6SS98. Classification follows source parent identifiers. English common names may vary by region.