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 its genus. References

Apteronotidae
Fish of South America
Fish of Brazil
Fish of Peru
Monotypic freshwater fish genera
Taxa named by Carl H. Eigenmann