| Hypopygus cryptogenes | |
|---|---|
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Gymnotiformes |
| Family: | Rhamphichthyidae |
| Genus: | Hypopygus |
| Species: | H. cryptogenes
|
| Binomial name | |
| Hypopygus cryptogenes (Triques, 1997)
| |
| Synonyms | |
| |
Hypopygus cryptogenes is a species of bluntnose knifefish endemic to Brazil where it is found in the Rio Negro basin. This species can reach a total length of up to 15 cm (5.9 in).2 It is the only member of the genus Stegostenopos according to FishBase,3 but studies have shown that it belongs in Hypopygus (making Stegostenopos a junior synonym) and this is followed by the Catalog of Fishes.245
References
References
- Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) (2022). "Hypopygus cryptogenes". IUCN Red List of Threatened Species (in Brazilian Portuguese). 2022 e.T135952958A135952979. doi:10.2305/IUCN.UK.2022-1.RLTS.T135952958A135952979.pt. Retrieved 27 March 2025.
- de Santana, C.D.; W.G.R. Crampton (2011). "Phylogenetic interrelationships, taxonomy, and reductive evolution in the Neotropical electric fish genus Hypopygus (Teleostei, Ostariophysi, Gymnotiformes)". Zoological Journal of the Linnean Society. 163 (4): 1096–1156. doi:10.1111/j.1096-3642.2011.00736.x.
- Froese, Rainer; Pauly, Daniel (eds.). "Stegostenopos cryptogenes". FishBase. April 2013 version.
- Ferraris Jr, C.J.; C.D. de Santana; R.P. Vari (2017). "Checklist of Gymnotiformes (Osteichthyes: Ostariophysi) and catalogue of primary types". Neotrop. Ichthyol. 15 (1). doi:10.1590/1982-0224-20160067.
- Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species related to Hypopygus cryptogenes". Catalog of Fishes. California Academy of Sciences. Retrieved 8 May 2018.