最初命名為 Placidochromis longus:
ZooBank:2B53CC7A-CB39-4522-A6B9-B2410B7226DC.
- Hanssens, Mark. 2004. "The deep-water Placidochromis species". In: J. Snoeks (ed.), The Cichlid Diversity of Lake Malawi, Identification, Distribution and Taxonomy. 104-196 (crc01165)
保育: Placidochromis longus 被評鑑為國際自然保育聯盟瀕危物種紅皮書名單中的 (DD) 資料缺乏 (2014).