The OB Zebra Cichlid, scientifically known as Metriaclima estherae, is a popular African cichlid known for its vibrant, often blotched coloration, stemming from the "Orange Blotch" (OB) gene. They are a color morph of the Red Zebra Cichlid, native to Lake Malawi in Africa. These cichlids are relatively hardy and well-suited for aquariums with other Mbuna species.