Blackback barbThe blackback barb is a species of cyprinid fish native to Africa where it is known to occur in shallow, vegetated waters of the Zambezi River system, the Cunene River system and the Zambian portion of the Congo River system.SizeThis species reaches a length of.EtymologyThe fish is named in honor of Keppel Harcourt Barnard of the South African Museum, because of his contributions to the taxonomy of South African fishes.Economic ValueIt is also found in the aquarium trade.