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Black ghost knifefish classification

 

 

Kingdom:Animalia

Phylum:Chordata

Class:Actinopterygii

Order:Gymnotiformes

Family:Apteronotidae

Genus:Apteronotus

Species:A. albifrons

 

 

Black ghost knifefish picture

 

References: 

https://en.wikipedia.org/wiki/Black_ ghost_knifefish