Insperanos
| Insperanos | |
|---|---|
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Characiformes |
| Family: | Anostomidae |
| Subfamily: | Leporininae |
| Genus: | Assega, Sidlauskas & Birindelli, 2021 |
| Species: | I. nattereri
|
| Binomial name | |
| Insperanos nattereri (Steindachner, 1876)
| |
| Synonyms | |
| |
Insperanos is a monospecific genus of freshwater ray-finned fish belonging to the family Anostomidae, the toothed headstanders. The only species in this genus is Insperanos nattereri, which is found in the Rio Negro, Aleixo Lake, and the central Amazon basin in Brazil.[2] It is the only member of the genus Insperanos.[3] Prior to 2021, it was classified in the large genus Leporinus, but was moved to its own monotypic genus in 2021 after a phylogenetic analysis found it to represent an evolutionarily basal member of the subfamily. It is thought to be a relatively ancient genus, having diverged from the rest of the Leporininae during the Late Eocene, about 37 million years ago.[4]
Etymology
It is named in honor of Johann Natterer (1787-1843).[5]
References
- ^ Frederico, R.G. (2022). "Leporinus nattereri". IUCN Red List of Threatened Species. 2022: e.T162695907A162695983. doi:10.2305/IUCN.UK.2022-2.RLTS.T162695907A162695983.en. Retrieved 21 March 2024.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Leporinus nattereri". FishBase. June 2018 version.
- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Anostomidae". Catalog of Fishes. California Academy of Sciences. Retrieved 17 May 2025.
- ^ Sidlauskas, Brian L; Assega, Fernando M; Melo, Bruno F; Oliveira, Claudio; Birindelli, José L O (2022-02-01). "Total evidence phylogenetic analysis reveals polyphyly of Anostomoides and uncovers an unexpectedly ancient genus of Anostomidae fishes (Characiformes)". Zoological Journal of the Linnean Society. 194 (2): 626–669. doi:10.1093/zoolinnean/zlab016. hdl:11449/218532. ISSN 0024-4082.
- ^ Christopher Scharpf (4 May 2025). "Family ANOSTOMIDAE Günther 1864 (Toothed Headstanders)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. Retrieved 23 July 2025.
- Géry, J., 1977. Characoids of the world. Neptune City ; Reigate : T.F.H. [etc.]; 672 p. : ill. (chiefly col.) ; 23 cm.