Original description as Ptychochromis grandidieri:
- Sauvage, Henri Emile. 1882. "Description de quelques poissons de la collection du Muséum d'histoire naturelle. V. 6". Bulletin de la Société Philomathique de Paris. (Ser. 7) V. 6 pp. 168-176 (crc00331)
Conservation: Ptychochromis grandidieri is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2016). As currently recognized Ptychochromis grandidieri has a widespread distribution throughout eastern lowland coastal regions. Environmental degradation is pervasive throughout much of its range, yet the species remains abundant in many areas. The salt tolerance of many populations suggests that its persistence throughout the Pangalanes canal system is likely; however, highland populations appear to have undergone severe attrition (Stiassny et al., 2006).