Name: Pseudotropheus demasoni
Origin: Lake Malawi (Africa)
Demasoni are relatively new dwarf mbuna to the hobby. They range from being mild mannered to ferocious! Stories of males wiping out every other fish in the tank are not unheard of, although uncommon. They breed easily and should be fed, as other mbuna, on spirulina flakes and the odd treat of mysis. I say mysis because I have found demasoni to have very delicate digestive systems, and slimey foods such as brine shrimp irritate the intestinal tract and can easily lead to bloat in this species. So take care not to overfeed. Do not attempt to keep more than one male in a group, as the dominant male will quickly rid the tank of any possible rivals. I have heard of many people keeping demasoni in a species tank in large breeding groups. They can be kept in a general mbuna tank as well with little problems, just keep an eye on them as they are known for their ability to dish out regular beatings, but are not so tough on the receiving end and if stressed can be prone to disease.
I have about 14 little ones and one big one of these. Very distinct color to them. You have to be careful, I have heard many people who breed them tell me that the males can be very brutal to the females. Killing of the females is pretty common from what I hear. Best to keep a couple females with a male so he won't chase just one to death. What these fish lack in size, they can more than make up in temper. My big male is always chasing fish 2 to 3 times his size. I definitely recommend these, they are by far one of the coolest looking Pseudotropheus mbuna.
This guy is no sucker. Donít let itís size fool you, this one can harass even the largest Malawi cichlid. But it doesnít mean it has a bad nature. It is a very curious fish, that will swim in your entire tank searching for amusement or food. Like other cichlids, caved tank will fit best. If you plan to keep it with females, make sure you put them in 3 females per male population. You should put more than one male only if your tank is big enough. The Demasoni will chase any fish that looks like it in the color and in the pattern. A most interesting cichlid, thus very recommended.
I currently have four of these beautiful fish in my 380 liter aquarium. They add a lot of colours to my tank, which holds 12 yellow labs, two orange and two peacocks. This picture is what mine do quite frequently, spinning around at the bottom chasing each other's tails, but never hurting one another. They do love caves for cover, but never seem to be over-protecting of them. Their colours really come out with frozen brine and are a beautiful addition to my tank.
Absolutely a beautiful fish! Adds a lot of character to the tank. Slightly aggressive for its size, but it can hold its own against larger fish. It has no problem fending off my fuelleborni, or my acei. Very funny fish to have, because it is so spastic at times, will be a joy to any malawi keeper!
My experience with P. demasoni has not been a happy one. At first, it did little more than chase everything in the tank around endlessly. However, it recently took on a very nasty turn. Overnight a beautiful Electric Blue was mauled and the following night my Aulonocara baenschi followed the same fate. Both fish perished. To make the circle complete, a large red zebra had a hole punched in its side and also died. Mr. Demasoni is now back at the pet store and is fortunate that he was not the star of a recent fish fry!