Xenomystus nigri (Günther)

Oladipo, Segun Olayinka, Everett, Amaya, Atofarati, Olabisi Tawakalit, Smith, Kennedy K., Nneji, Ifeanyi C., Adelakun, Kehinde Moruf & Nneji, Lotanna Micah, 2025, An updated ichthyofaunal checklist for the Nigerian Lagos Lagoon with notes on nomenclatural changes and the conservation status of species, Zootaxa 5646 (1), pp. 38-62 : 53

Xenomystus nigri (Günther) ;

African knifefish.

Remarks: Xenomystus nigri is distributed across coastal waters in Sierra Leone to Angola and Sudan, including several West African drainage basins. During the study, it was occasionally captured in Badagry and Epe regions of NLL. This species is characterized by its distinctive knife-shaped body, absence of dorsal fins, and a soft anal fin containing approximately 108–130 rays. Other synonyms for X. nigri include Notopterus nigri (Günther) and Notopterus nili (Steindachner) .