nigra, Petrotilapia Marsh [A. C.] 1983:7, Figs. 6c, 9 [Ichthyological Bulletin of the J. L. B. Smith Institute of Ichthyology No. 48; ref. 9147] Lake Malawi [Lake Nyasa], southeastern Africa. Holotype: BMNH 1981.2.2.206. Paratypes: BMNH 1981.2.2.207-211; SAIAB [formerly RUSI] 500-510 (1 ea. = 11); USNM 228442 (4). •Valid as Petrotilapia nigra Marsh 1983 -- (Maréchal 1991:374 [ref. 20944], Stauffer & van Snik 1996:696 [ref. 22230], Poll & Gosse 1995:289 [ref. 24781], Ruffing et al. 2006:534 [ref. 28963], Lundeba et al. 2011:149 [ref. 31361], Lundeba et al. 2011:149 [ref. 31361], Konings 2016:77 [ref. 34521]). Current status: Valid as Petrotilapia nigra Marsh 1983. Cichlidae: Pseudocrenilabrinae. Distribution: Eastern Africa: Lake Malawi. Habitat: freshwater.