Chilodus

uperregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Otomorpha
Subcohors: Ostariophysi
Sectio: Otophysa
Ordo: Characiformes
Superfamilia: Anostomoidea

Familia: Chilodontidae
Genus: Chilodus
Species: C. fritillus – C. gracilis – C. punctatus – C. zunevei
Name
Chilodus Müller and Troschel, 1844

Chilodus is a genus of extant chilodontid (characiform) headstanders from South America[2][3][4] They live in the Orinoco and Amazon Basins, as well as in various rivers in the Guianas. The currently described, valid species in this genus are:

Chilodus fritillus Vari & H. Ortega, 1997
Chilodus gracilis Isbrücker & Nijssen, 1988 (graceful headstander),[3][4] or sometimes called petite headstander
Chilodus punctatus J. P. Müller & Troschel, 1844 (spotted headstander )[4]
Chilodus zunevei Puyo, 1946

Two of these species, C. punctatus and C. gracilis, are common aquarium fishes.
References

Müller, Johannes; Troschel, Franz (1844), "Beschreibung neuer Asteriden", Archiv für Naturgeschichte, 10 (1): 178–185
Müller, J.; Troschel, F. H. (1844). "Beschreibung neuer Asteriden". Archiv für Naturgeschichte. 10 (1): 81–99.
Babcock, L. E. (2024). "Replacement names for two species of Orthacanthus Agassiz, 1843 (Chondrichthyes, Xenacanthiformes), and discussion of Giebelodus Whitley, 1940, replacement name for Chilodus Giebel, 1848 (Chondrichthyes, Xenacanthiformes), preoccupied by Chilodus Müller & Troschel, 1844 (Actinopterygii, Characiformes)". ZooKeys (1188): 219–226. doi:10.3897/zookeys.1188.108571. PMC 10790574. PMID 38230382.

Isbrücker, I. J. H.; Nijssen, H. (1988). "Review of the South American characiform fish genus Chilodus, with description of a new species, C. gracilis (Pisces, Characiformes, Chilodontidae)". Beaufortia. 38 (3): 47–56.

Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Chilodus in FishBase. October 2011 version.