Lamprichthys tanganicanus or Tanganyika Killifish is the largest African Killifish, they should be kept in a school.
Quite peaceful, but their fragile nature means they cannot easily be mixed with most of Tanganyika's cichlids. Any tank mates should be very gentle species such as Cyprichromis, or strict bottom dwellers in a tall tank like shell dwellers. Males can be hard drivers and should be outnumbered by females at least two to one.