最初描述为 Melanochromis interruptus:
- Melanochromis elastodema Bowers & Stauffer, 1997, 标本产地来自于 Liwelo Bay, Chizumulu Island, Lake Malawi, Malawi. 鉴定者: Konings, 1998
保育: Pseudotropheus interruptus 由国际自然保护联盟（IUCN）在濒危物种红色名录中为自然保育而进行了评估 evaluated (NT) 近危（Near threatened） (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.