Original description as Aulonocara rostrata:
- Trewavas, Ethelwynn. 1935. "A Synopsis of the Cichlid Fishes of Lake Nyasa". Annals and Magazine of Natural History. Series 10; pp. 65-118 (crc00118)
- Aulonocara macrochir Trewavas, 1935, with type locality at Monkey Bay, Lake Malawi. Determiner: Konings, 1995
Conservation: Aulonocara rostratum is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2006). Since the sand-dwelling cichlids in the lake are currently heavily (over-)fished it may become threatened in the near future.