Parapteronotus

Parapteronotus hasemani, the duckbill knifefish, is a species of ghost knifefish found in main river channels and along the margins in the Amazon basin of Brazil and Peru. It is the only member of the genus Parapteronotus. This dark-colored knifefish reaches up to about 38 cm (15 in) in total length.^[3][4]

Parapteronotus
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Gymnotiformes
Family:	Apteronotidae
Subfamily:	Apteronotinae
Genus:	Parapteronotus Albert, 2001
Species:	P. hasemani
Binomial name
Parapteronotus hasemani (M. M. Ellis, 1913)
Synonyms[2]
Sternarchus hasemani M. M. Ellis, 1913 Apteronotus anas C. H. Eigenmann & W. R. Allen, 1942

Named in honor of John D. Haseman (1887-1969), field collector in the Carnegie Museum of Natural History’s Department of Ichthyology from 1908 to 1911, who collected the type specimen.^[5]