No idea on the classification, but I know they can be tough on their females. I had an assorted Malawi 90g tank, with Lwandas as the peacock in the tank. I bought 4 fish and ended up with, luckily I thought, 1 male and 3 females. When they got old enough, the male started paying attention to the females. Within 2 days he'd killed all of them. Needless to say, I was NOT happy.