Hello colleagues! On the agenda today we have an aquarium fish from the cichl family and it is called Psevdotrofeus Demasoni.
Homeland habitat of this aquarium fish is Lake Malawi in Africa. Hydrobiont prefers to stick to the rocky landscape of the Pombo rock that is near the coast of Tanzania. The fish feeds on algae, which grow on the stones of the lake, and together with them larvae of small insects, crustaceans, zooplankton and mollusks are eaten.
In view of its size, Demasoni is considered a representative of the order of dwarf cichlids.
Psevdotrofeus Demasoni belongs to the category of Tsikhlovy Mbuna, which has more than a dozen fairly active and aggressive fish. Often, Demasoni is confused with the Pseudotrophus of the yellow-dipping, as they are similar in color and size. However, there are differences, especially clearly expressed various strips that do not reach the tail.
The bulk of the Mbun representatives were displayed in captivity, so it will be difficult to say what kind you have acquired. It may be that you bought two types of cichlids, which are not recommended to be crossed with each other.
Psevdotrofeusa Demasoni has an elongated body with alternating vertical stripes of blue, dark blue and black colors. In total, there are six dark and five light stripes that begin at the gill covers and end near the tail. There are also blue stripes on the head, interspersed with a pair of dark stripes.
One dark stripe passes between the eyes of the fish, and the second intersects on the gill cover with the first vertical strip. The chin of the fish is blue.
If you look closely at the hero of our today’s article, you will notice some similarities between the pseudotrofaus and sea fish, and in particular with wrasses and parrot fish. To protect against predators, cichlids have thorny rays on their fins.
The front fins are soft and they are ideal for smooth floating in the aquatic environment. Cichlids have a pair of nasal openings for smell, while in other fish there is only one.
In size Demasoni grows no more than 8-9 centimeters in length.
Since Psevdotrofeusy Demasoni are aggressive fish, it is extremely not recommended to keep them with representatives of other types of aquarium fish. They will be able to get along only with other members of the Mbun family, and only if the underwater landscape is rocky.
Like the rest of the Cichl, Demasoni needs its own territory. There were cases when even small males chased other fish from their territory.
It is also not advisable to contain Pseudotropheus along with Cynotilahia afra and Pseudotropheus. The best option if the neighbors will be yellow Mbuny who do not have strips.
These include: Metriaclima estherae, Labidochromis caer Uleus and Maylandia callainos.
The optimal number of fish in the flock should be at least 12 pieces. The number of males and females can vary, but definitely, for such a number of fish, there should be several males. If we analyze the behavior of cichlids, then we can conclude that in large flocks males, especially dominant ones, are less likely to show intraspecific aggression.
If there are about six fish in the school and there are two males in it, then the dominant one will kill the weaker one. At this time, other individuals will avoid fights with him.
The complexity of the content of Psevdotrofeus Demasoni can be assessed within moderately high. Since these dwarf cichlids grow no more than 8 centimeters in length, it is desirable to keep them in flocks of more than 10 pieces. The fish is mobile and very aggressive.
Aquarium design should include a rocky landscape with a large number of various shelters. This will minimize the number of clashes.
As a rule, Pseudotropheus demasoni is kept mainly in the middle layer of water.
The optimal volume of aquarium for Mbun should be from 400 liters. Water can be both fresh and brackish. A prerequisite is good filtration and powerful aeration of aquarium water.
To ensure a suitable pH setting, coral crushed stone or sand for reef aquariums should be used in an aquarium. Rough gravel can also be used.
In view of the high curiosity, the fish need to organize a large number of shelters in the form of caves, grottoes, ceramic tubes and pots. These shelters allow subdominant individuals of both sexes to have their own personal territory.
As shown, cichlids of Lake Malawi are extremely sensitive to the quality of aquarium water. Depending on the population in the aquarium, you need to replace every week from 20 to 50% of water to fresh. If the diet is bad and unbalanced, then the fish may suffer from bloating.
The water that constantly feeds Lake Malawi is famous for its high level of dissolved minerals, which causes alkalization of water. Lake Malawi is famous for its stable pH level and other chemical parameters, so if you have representatives from this biotope in your home aquarium, the water quality should be high.
There were cases when the fish eventually acclimatized to different pH values.
The parameters of the fish are as follows:
- pH 7.6-8.6;
- water temperature: 24-28 degrees;
- hardness: 10 to 18 dH.
Since Psevdotrofeus Demasoni is an omnivorous cichlid, he can be given food of any origin. However, the main emphasis will still have to do on vegetable feed. To prevent the development of diseases of the digestive system, for the basic food you need to take any food for cichlids, in which a lot of vegetable additives with vegetable fibers.
The optimal number of feedings is considered to be no more than two, which will prevent overeating of fish and the water quality will remain high for a long time. In addition, do not forget about vitamin supplements to the main feed.
It is impossible to contain pseudotrophus with carnivorous cichlids, as it is possible to cause the development of infectious diseases and death.
Demasoni breed in captivity in flocks, the number of individuals in which must be at least 12-15 pieces. Caviar fish bears in the mouth. When it reaches 2.5 centimeters in length, the female can already reproduce, but the number of offspring will be small.
During spawning, all dominant males become extremely aggressive and often they slaughter weaker males to death if there is a shortage of shelters in the aquarium. Like other representatives of Mbun, Demasoni during spawning, the male changes color.
For spawning, the female lays from 15 to 25 eggs, which she immediately puts in her mouth and carefully bears.
A week after spawning, fry will appear on the light, provided that the water temperature reached 27 degrees. After another couple of weeks, the fry already swim independently around the aquarium and feed on Nauplii Artemia and small flakes.
From the very first weeks of their life, young animals are aggressive and take an active part in numerous fights. Very often the young are eaten by older fish, so if you want to save the offspring, you need to seed the fry from the common aquarium.