Rio Grande Darter
Etheostoma grahami (Girard, 1859)
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 Rio Grande darter (Etheostoma grahami) is a small species of ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae which includes the perches, ruffs and pike-perches. It is endemic to the lower Rio Grande drainage of the United States and Mexico. It inhabits riffles over substrates of gravel or rubble. This species can reach a length of 6 cm (2.4 in), though most only reach about 3 cm (1.2 in). The Rio Grande darter was first formally described as Oligocephalus grahami in 1859 by the French zoologist Charles Frédéric Girard (1822–1895) with the type locality given as the Devils River in Texas. The specific name honors the American soldier and topographer James Duncan Graham (1795–1865), who led the expedition on which the type was collected by John H. Clark.
Wikipedia contributors, Rio Grande darter; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T08:11:31.958635+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Etheostoma grahami (Girard, 1859)
- Name authority
- (Girard, 1859)
- Common name
- Rio Grande Darter
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Perciformes
- Family
- Percidae
- Genus
- Etheostoma
- 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
- orderPerciformes
- suborderPercoidei
- familyPercidae Rafinesque, 1815
- subfamilyEtheostomatinae Agassiz, 1850
- genusEtheostoma Rafinesque, 1819
- speciesEtheostoma grahami (Girard, 1859)
Close classified relatives
These entries share the source’s genus, Etheostoma. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Etheostoma artesiae (Hay, 1881) | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma asprigene (Forbes, 1878) | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma autumnale Mayden, 2010 | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma barbouri Kuehne & Small, 1971 | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma basilare Page, Hardman & Near, 2003 | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma bellator Suttkus & Bailey, 1993 | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma bison Ceas & Page, 1997 | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma boschungi Wall & Williams, 1974 | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma burri Ceas & Page, 1997 | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma cervus Powers & Mayden, 2003 | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma chermocki Boschung, Mayden & Tomelleri, 1992 | PercidaeChordata | Accepted speciesExtinction status not supplied |
| Etheostoma chlorobranchium Zorach, 1972 | PercidaeChordata | 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 |
|---|---|
| Oligocephalus grahami Girard, 1859 Girard, 1859 | 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=1419863 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:3BL45. Classification follows source parent identifiers. English common names may vary by region.