Origin and locale/variety: Chitimba Bay--Malawi, Lake Malawi, East Africa
Size: Adults are usually 5 to 6 inches in aquarium environment.
Sex differences: Males obtain a beautiful bright metallic blue coloration with a yellow band along the shoulder. Females are silver. Males nearly always--and females quite often--will "strut" in the aquarium with fins fully extended. This most likely gave birth to the name "peacock" cichlid.
Aquarium behavior: Aulonocara stuartgranti "Bicolor" is a very undemanding cichlid. In the aquarium, they thrive in almost any community setup. It is a fairly peaceful peacock species, even when breeding. The fish accepts most any environment that has gravel/sand, rocks, and even live plants. Males nearly always--and females quite often--will "strut" in the aquarium with fins fully extended. This most likely gave birth to the name "peacock" cichlid.
You Need to Know: Not only do males develop their coloration and finnage over time, but coloration and finnage are especially variable among peacock males. In any given group that includes a number of specimens, there are likely to be a few extraordinary ("show") males, a larger number of above average specimens, and a larger number of average specimens. The average and above average groups can be encouraged to display better coloration by making them dominant within their aquarium and providing them with female companions. The aquarist should also be aware that immature peacocks are among the most drably colored of all aquarium fish.