The colorful tetras of South America have Old World relatives in the region of the Congo River in Africa. These African counterparts are equally colorful. One of these species is the Congo tetra, which shimmers in all the colors of the rainbow. This loud coloring is used for extravagant courtship displays toward both the male and female.
Characteristics 
Family
Alestidae
Origin
Congo River Basin
Adult Size
2.5 to 3. 5 inches
Social
Peaceful schooling fish
Lifespan
3 to 5 years
Tank Level
All levels
Minimum Tank Size
30 gallons
Diet
Omnivores
Breeding
Egg layer
Care
Moderate
pH
6.0 to 7.5
Hardness
3 to 18 dGH
Temperature
73.0 to 82.0 F (22.8 to 27.8 C)