Original description as Pseudotropheus longior:
- Seegers, Lothar. 1996. "The identity of Pseudotropheus elongatus, with the description of P. longior from Mbamba Bay, Tanzania, and notes on Genyochromis mento (Teleostei: Cichlidae).". Ichthyological Explorations of Freshwaters. v. 7(n. 2), pp. 97-110 (crc00177)
Conservation: Chindongo longior is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (VU) vulnerable (2006).