Actually the 'Krib' or Kribensis is a Pelvicachromis. 'Pelvicachromis Pulcher' to be exact. Pelvicachromis is the 'genus' while pulcher is the 'species'
There are a few species of Pelvicachromis that are closely related to P. pulcher(Kribensis), namely:
Pelvicachromis humilis, Pelvicachromis roloffi, Pelvicachromis rubrolabiatus, Pelvicachromis signatus, Pelvicachromis subocellatus, and Pelvicachromis taeniatus.