What is "pseudotropheus"

Pseudotropheus is a genus of rock-dwelling ( mbuna) cichlid fishes found in Lake Malawi of Eastern Africa. Like some other large cichlid genera, such as Cichlasoma, a number of related fishes have been recently reassigned to different genera such as Tropheops or Maylandia (see also: Metriaclima). Some species of Melanochromis in turn have been moved into Pseudotropheus. Mbuna literally means "rockdweller" and this description accurately depicts the lifestyle of these cichlids which mostly live in rocky areas. Most pseudotrophine cichlids are algal grazers in the wild.