最初命名為 Melanochromis interruptus:
- Melanochromis elastodema Bowers & Stauffer, 1997, 其模式產地在 Liwelo Bay, Chizumulu Island, Lake Malawi, Malawi. 鑑定者: Konings, 1998
保育: Pseudotropheus interruptus 被評鑑為國際自然保育聯盟瀕危物種紅皮書名單中的 (NT) 近危 (2018). It is endemic to a relatively small island, Chizumulu, and even around that island mainly occurs on the rocky shores along the southwestern corner of it. It thus has a very restricted distribution with the population at Chiwi Rocks heavily exploited for the ornamental fish trade. It is too small to be of any value as food fish, hence it suffers no threats to its existence from local fishermen.