leptosoma, Rhamphochromis Regan [C. T.] 1922:726 [Proceedings of the Zoological Society of London 1921 (pt 4) (no. 36); ref. 3673] Lake Malawi [Lake Nyasa], southeastern Africa. Holotype (unique): BMNH 1908.10.27.63. •Valid as Rhamphochromis leptosoma Regan 1922 -- (Eccles & Trewavas 1989:317 [ref. 13547], Maréchal 1991:423 [ref. 20944]). •Synonym of Rhamphochromis esox (Boulenger 1908) -- (Turner et al. 2004:211 [ref. 28114], Konings 2016:170 [ref. 34521]). Current status: Synonym of Rhamphochromis esox (Boulenger 1908). Cichlidae: Pseudocrenilabrinae. Habitat: freshwater.