African knifefish
- kingdom: Animalia
- phylum: Chordata
- class: Actinopterygii
- order: Osteoglossiformes
- family: Notopteridae
- genus: Xenomystus
- species: Xenomystus nigri
Malanville
Atakora
Benin
Mbandaka
Équateur
Congo, Democratic Republic
Lékoni
Haut-Ogooué
Gabon