Article · Wikipedia archive · Last revised Jul 25, 2026

Myleus

Myleus is a genus of serrasalmids from South America, where found in the Amazon, Orinoco and São Francisco basins, as well as the river basin of the Guiana Shield. They are found in rivers with moderately or fast-flowing water, including rapids. They are primarily herbivores, but also take some animal matter. Depending on the exact species, they reach up to 12–42 cm (0.4–1.4 ft) in standard length, and the adult males have a double-lobed anal fin and filamentous extensions on the dorsal fin. Their strong teeth means that larger individuals can inflict severe bites on humans.

Last revised
Jul 25, 2026
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Source
Myleus
Myleus sp.
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Serrasalmidae
Subfamily: Myleinae
Genus: Myleus
J. P. Müller & Troschel, 1844
Type species
Myleus setiger
J. P. Müller & Troschel, 1844

Myleus is a genus of serrasalmids from South America, where found in the Amazon, Orinoco and São Francisco basins, as well as the river basin of the Guiana Shield.1 They are found in rivers with moderately or fast-flowing water, including rapids.2 They are primarily herbivores, but also take some animal matter.2 Depending on the exact species, they reach up to 12–42 cm (0.4–1.4 ft) in standard length, and the adult males have a double-lobed anal fin and filamentous extensions on the dorsal fin.2 Their strong teeth means that larger individuals can inflict severe bites on humans.

Species

There are currently 6 recognized species of Myleus:3

References

References

  1. Ota, R.P.; Röpke, C.P.; Zuanon, J.; Jégu, M. (2013). "Serrasalmidae". In Queiroz, L.J.; Torrente-Vilara, G.; Ohara, W.M.; Pires, T.H.S.; Zuanon, J.; Doria, C.R.C. (eds.). Peixes do rio Madeira. Vol. II. São Paulo: Santo Antonio Energia. pp. 12–47.
  2. van der Sleen, P.; J.S. Albert, eds. (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. p. 185. ISBN 978-0691170749.
  3. Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Myleus". Catalog of Fishes. California Academy of Sciences. Retrieved 15 February 2026.