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Sternarchorhynchus

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Sternarchorhynchus
Sternarchorhynchus retzeri, conventional and X-ray images
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
Gymnotiformes
Family:
Apteronotidae
Genus:
Sternarchorhynchus

Castelnau, 1855

Sternarchorhynchus is a genus of ghost knifefishes found in the Amazon and Orinoco basins, as well as rivers in the Guianas, in tropical South America. They have a relatively long, downwards-pointed and tube-like snout. The adult males of some species have distinct teeth on the outside of the lower jaw, likely used in confrontations with other males.[1] The largest species reach up to 60 cm (2 ft) in total length, but most are less than half that size and the smallest only reach about 15 cm (1⁄2 ft).[1][2] They feed on invertebrates.[1]

Species

Sternarchorhynchus in an aquarium

There are currently 32 described species in this genus:[2]

References

Wikimedia Commons has media related to Sternarchorhynchus.
  1. ^ a b c van der Sleen, P.; J.S. Albert, eds. (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. p. 330. ISBN 978-0691170749.
  2. ^ a b Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Sternarchorhynchus in FishBase. October 2017 version.


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