Blackback barb

The blackback barb (Enteromius barnardi) 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.

Size
This species reaches a length of 7 cm.

Etymology
The fish is named in honor of Keppel Harcourt Barnard (1887–1964) of the South African Museum, because of his contributions to the taxonomy of South African fishes.

Economic Value
It is also found in the aquarium trade.