Hyphessobrycon agulha Fowler, 1913
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
Hyphessobrycon agulha, also called the red-tailed flag tetra, is a species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. This fish is found in the basin of the Madeira River in Brazil along with parts of Peru and Bolivia. It reaches a maximum length of 4.3 centimetres (1.7 in). Though it is mainly found in the wild, it is occasionally kept by fishkeepers and is sometimes confused with the neon tetra. The fish is primarily an insectivore, though it does eat vegetable matter. It is considered to form a group with other species in Hyphessobrycon as they share a dark stripe running lengthwise.
While its name comes from the native name for this species along the Madeira River in Brazil, the fish also occurs in Colombia and Peru.
Wikipedia contributors, Hyphessobrycon agulha; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T22:50:51.079884+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Hyphessobrycon agulha Fowler, 1913
- Name authority
- Fowler, 1913
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Characiformes
- Family
- Acestrorhamphidae
- Genus
- Hyphessobrycon
- 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
- orderCharaciformes
- suborderCharacoidei
- familyAcestrorhamphidae Eigenmann, 1907
- subfamilyHyphessobryconinae Lima, Carvalho & Faria, 2024
- genusHyphessobrycon Durbin, 1908
- speciesHyphessobrycon agulha Fowler, 1913
Close classified relatives
These entries share the source’s genus, Hyphessobrycon. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Hyphessobrycon acaciae García-Alzate, Román-Valencia & Prada-Pedreros, 2010 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon amandae Géry & Uj, 1987 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon amapaensis Zarske & Géry, 1998 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon auca Almirón, Casciotta, Bechara & Ruíz Díaz, 2004 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon bifasciatus Ellis, 1911 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon boulengeri (Eigenmann, 1907) | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon cachimbensis Travassos, 1964 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon catableptus (Durbin, 1909) | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon chocoensis García-Alzate, Román-Valencia & Taphorn, 2013 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon clavatus Zarske, 2015 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon coelestinus Myers, 1929 | AcestrorhamphidaeChordata | Accepted speciesExtinction status not supplied |
| Hyphessobrycon columbianus Zarske & Géry, 2002 | AcestrorhamphidaeChordata | 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.
- Fowler, H. W. (1913). Fishes from the Madeira River, Brazil. Proceedings of the Academy of Natural Sciences of Philadelphia, v. 65: 517–579. 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:3NRVY. Classification follows source parent identifiers. English common names may vary by region.