Original description as Labidochromis caeruleus:
- Fryer, Geoffrey. 1956. "New species of cichlid fishes from Lake Nyasa". Revue de Zoologie et Botanique Africaines. v. 53 (1-2); pp. 81-91 (crc00117)
Conservation: Labidochromis caeruleus is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2018). In recent years, renewed efforts by various exporters in collecting the yellow variant of this species has made the already rare species even less likely to encounter underwater. Other populations are much less affected by the ornamental fish trade even though Labidochromis caeruleus is nowhere common.