Sternarchorhamphus
Sternarchorhamphus muelleri is a species of ghost knifefish that occurs in the Amazon and Orinoco river basins in tropical South America. It has a long pointed snout and reaches up to about  in total length. It is the only member of the genus 
Sternarchorhamphus.

References

Apteronotidae
Fish of the Amazon basin
Knifefish of Brazil
Freshwater fish of Peru
Freshwater fish of Venezuela
Monotypic ray-finned fish genera
Taxa named by Carl H. Eigenmann