Hypopomus
Hypopomus artedi is a species of bluntnose knifefish that is found in Argentina, Brazil, French Guiana, Guyana and Suriname.  This species can reach a length of  SL.  It can also be found in the aquarium trade.  It is the only member of the genus Hypopomus.

References

External links
 Photograph

Hypopomidae
Monotypic ray-finned fish genera
Fish of the Amazon basin
Freshwater fish of Argentina
Knifefish of Brazil
Fish of French Guiana
Fish of Guyana
Fish of Suriname
Fish described in 1856
Taxa named by Johann Jakob Kaup