Perissodus
Perissodus is a genus of cichlids endemic to Lake Tanganyika in Africa. They feed on scales.
Species
There are currently six recognized species in this genus:Perissodus eccentricus Liem & D. J. Stewart, 1976Perissodus elaviae Perissodus microlepis Boulenger, 1898Perissodus multidentatus Perissodus paradoxus Perissodus straeleniP. elaviae, P. multidentatus, P. paradoxus & P. straeleni were formerly allocated to ''Plecodus''