Original description as Hemichromis longiceps:
- Günther, Albert C. L. G. 1864. "Report on a collection of reptiles and fishes made by Dr. Kirk in the Zambesi and Nyassa regions". Proceedings of the Zoological Society of London. (pt 2); pp. 303-314 (crc00091)
Conservation: Rhamphochromis longiceps is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2006).