Maylandia callainos (sometimes referred to as Cobalt Zebra, Cobalt Blue Mbuna or Cobalt Blue African Cichlid) is a species of cichlid endemic to Lake Malawi where they only occurred naturally in Nkhata Bay though it has now been introduced to other locations. This species can reach a length of 8 centimetres (3.1 in) SL. It can also be found in the aquarium trade.