gracilis, Marcusenius Kramer [L. B.] 2013:123, Fig. 2E [Marine and Freshwater Behaviour and Physiology v. 46 (no. 2); ref. 32737] Comoé River, Kafolo, Mouches Tsété, 9°356'N, 4°19'W, Ivory Coast. Holotype: ZSM 42204. Paratypes: 16, all at ZSM. Preoccupied by Gnathonemus gracilis Pellegrin 1922 when both taxa are classified in Marcusenius. Replaced by Marcusenius elegans Fricke & Kramer 2022. •Valid as Marcusenius gracilis Kramer 2013 -- (Kramer & Wink 2013:8 [2334] [ref. 32824]). •Synonym of Marcusenius elegans Fricke & Kramer 2022 -- (Fricke & Kramer 2022:499 [ref. 39495]). 2°Homonym. Current status: Synonym of Marcusenius elegans Fricke & Kramer 2022. Mormyridae. Habitat: freshwater.