Original reference as:
- Turner, George & Rosanna L. Robinson, Paul W. Shaw, Gary R. Carvalho. 2004. "Identification and Biology of Diplotaxodon, Rhamphochromis and Pallidochromis". The Cichlid Diversity of Lake Malawi, Identification, Distribution and Taxonomy. 198-251 (crc01772)
Conservation: Rhamphochromis sp. 'longiceps grey-back' is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.