Original description as Paratilapia longimanus:
- Boulenger, George Albert. 1911. "On a collection of fishes from the Lake Ngami Basin, Bechuanaland". Transactions of the Zoological Society of London. pp. 399-431 (crc01410)
Conservation: Serranochromis longimanus is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2007).