Pseudotropheus demasoni is a species of cichlid endemic to Lake
Malawi where it is only known from the Pombo Rocks in Tanzanian waters.
This species can potentially reach a maximum length of 10. centimetres
(3.9 in) SL. It is now commonly found in the aquarium trade.
The male of this species has dark blue or black vertical
stripes with alternating lighter stripes of light blue to white. The male
Demasoni Cichlid also displays the typical spots on the anal fin, and is
considerably larger than the female. The female of this species are very
indifferent from the males although they tend to be smaller in size, and may
also lack the spots on the anal fin. When under stressful conditions, whether
in the wild or in captivity, their color lightens drastically and they hide in
a considerable safe region until they feel safe. This species is highly
aggressive for its size.
