plesiomorphus, Rusichthys Winterbottom [R.] 1979:299, Figs. 1-2 [Bulletin of Marine Science v. 29 (no. 3); ref. 4754] Off Kenya, 2°42'S, 40°53'E, southwestern Indian Ocean, Anton Bruun cruise 8, station 420a, depth 140 meters. Holotype: USNM 218163. Paratypes: USNM 218164 (1, c&s). •Valid as Rusichthys plesiomorphus Winterbottom 1979 -- (Winterbottom 1986:27 [ref. 5727], Winterbottom 1996:581 [ref. 22147], Winterbottom & Santini 2022:124 [ref. 39749]). Current status: Valid as Rusichthys plesiomorphus Winterbottom 1979. Pseudochromidae: Congrogadinae. Distribution: Western Indian Ocean: Kenya. Habitat: marine.