Pseudotropheus Acei

Adults of this fish reach a length of approximately 10–12 cm. Their coloration varies from blue to turquoise, and their fins have a yellowish tint. Sexual dimorphism is weakly expressed, making external sex determination difficult. However, by carefully observing the fish's behaviour, their sex can be determined.

This species is endemic to the East African Rift Valley lake Malawi, also known as Nyasa. This African lake is located in the east of the continent, covering territories of Malawi, Mozambique, and Tanzania. The fish prefers the western coast of the lake, inhabiting sandy and rocky substrates.

This species belongs to the Mbuna cichlid group, many of which are known for their aggressive behavior. However, contrary to the general trend, it has a milder character, allowing it to coexist peacefully with other calm aquarium inhabitants. Within the species, relationships are controlled by competition between males: each male selects and actively defends its territory from rivals, which can lead to minor skirmishes. Females, on the other hand, move freely throughout the aquarium and often gather in groups. Based on this, for keeping one male Pseudotropheus Acei in a small aquarium, it is recommended to have at least 3 females.

For a pair of these fish, an aquarium of at least 100 liters is recommended. The decor should include a sandy substrate combined with piles of boulders and rocks, forming crevices and shelters. In addition to natural elements, various artificial shelters can be used: hollow tubes, ceramic pots, or decorative objects imitating castles and sunken ships. The presence of natural driftwood will also be beneficial. Live plants are not essential, as the fish may damage them. Successful keeping of these cichlids directly depends on maintaining stable water parameters. It is necessary to regularly monitor key indicators (pH, dGH, nitrite, nitrate levels, etc.) and promptly correct them if they deviate from the norm. Aquarium care for Pseudotropheus Acei includes cleaning algae from the glass, removing organic waste from the substrate, and weekly water changes of 20–25% of the volume with fresh water.

This is an omnivorous species that readily accepts most common foods in a home aquarium, whether dry, frozen, or sinking. It is important to note that the majority of the diet (more than half) should consist of plant-based components. One should not limit feeding exclusively to protein-rich foods such as bloodworms or brine shrimp.

It is quite possible to breed these fish in a home aquarium. Their method of reproduction is unique to cichlids of Lakes Malawi and Tanganyika. During the spawning period, the male selects a flat stone in his territory, thoroughly cleans it, and then attracts females to this improvised nest. At this time, males become more aggressive towards rivals and other aquarium inhabitants, so for breeding, it is desirable to set aside a separate tank with identical water conditions. When the female is ready to spawn, she responds to the male's courtship, releasing small portions of eggs in turn. After fertilization, the female immediately takes the eggs into her mouth, where they remain throughout the incubation period, which lasts 3–4 weeks.

The main cause of most diseases in Malawian cichlids is unsuitable living conditions and poor-quality food, which often leads to a condition known as Malawi Bloat. Upon detecting the first symptoms, it is important to check water parameters and ensure there are no high concentrations of dangerous substances such as ammonia, nitrites, and nitrates. All parameters must be normalized before proceeding with treatment.

When selecting individuals, pay attention to their activity and the absence of visible damage, such as ulcers, whitish spots, or fin rot. A healthy fish should show interest in its surroundings, react quickly to external stimuli, and have clear, bright eyes. Avoid specimens with severely sunken bellies or unnaturally bloated abdomens, unless it is related to the reproductive cycle of females. In the store, fish should exhibit typical species behavior, actively moving in the water column or near decorations, rather than constantly hiding in the corners of the aquarium. It is recommended to purchase individuals from a single source to minimize the risk of introducing infections, and to choose fish from groups where there are no dead or obviously sick individuals in shared tanks.