Pseudotropheus demasoni is living in a rocky environment and it can be found near Pombo Rocks and Ndumbi Rocks.
In the lake the males of these species can grow to 8 cm, in the aquarium however they can grow taller because of a good feeding. Then the males can grow to about 10 cm, females grow to about 8 cm.

In the course of 2012 Iīve bought a group of this species, 1 male and 3 females. At that time the females were just 4 cm tall and the male about 5 cm but in the meantime the male is grown up to a size of about 7 cm and the females to 5-6 cm.
The male has taken possession of a nice place under the rocks - in the right corner of my tank - where he defends this territory quite fiercely. In the past year they have been spawning several times which is visible in my tank in this moment, february 2013. The group is getting bigger and is existing now also of about ten young fish which were able to survive in this aquarium between the other big "mbunas".

In this aquarium the male behaves itself quite agressive however in general it turns out very well, they are always very busy swimming around and so itīs a nice fish to look at. You can best keep this species with multiple females and other mbuna - no look alikes - and a lot of hiding places in the aquarium.

In the lake they are mainly feeding themselves with invertebrates and algae from the rocks. In the aquarium they are comfortable with any food. They take everything they get offered, like spirulina pellets, mysis, artemia, cyclops and shrimp-peas mix. Food rich of algae like spirulina pellets or flakes is very important to them so this should not be missing on their menu.


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