Blue Zebra

Adults reach about 13 cm. Their body is pale blue with barely visible dark vertical bars. Sexual dimorphism is slight. Males are usually a bit larger than females, with a more developed forehead and characteristic yellow spots on the anal fin. This fish looks very similar to one of the colour forms of the Red Zebra cichlid, some varieties of which are also blue despite their name and nearly indistinguishable from the Blue Zebra.

The Blue Zebra is endemic to Lake Nyasa (Malawi), located in the East African rift valley on the border of Mozambique, Malawi and Tanzania. In the wild it favours the northern shore, living among rocky outcrops and boulders.

This species is aggressive and territorial. In smaller tanks (around 100 litres), males are intolerant of each other and may attack other fish. Under these conditions a harem arrangement is recommended: one male with 3–4 females. In larger tanks (several hundred litres) you can create a diverse community with several Mbuna, Aulonocara and Utaka species.

To keep 5–6 individuals, a minimum tank volume of 150 litres is recommended. Use sandy substrate and large stones or rock formations to create crevices and caves for shelter. Live plants, natural wood and other elements typical of tropical aquariums are unnecessary; this sparse setup suits the fish's natural habitat. For long-term health, maintain stable water chemistry with high pH and dGH. Regular gravel siphoning prevents the buildup of organic waste from uneaten food and droppings. Change part of the water weekly.

In nature the Blue Zebra feeds on algae and small organisms, scraping them from rock surfaces. In the aquarium it is crucial to provide a plant-based diet. Specialized pellets for Mbuna cichlids are an excellent choice for beginners, as they contain all the nutrients for a balanced diet.

Favourable spawning conditions include a water pH of 8.2–8.5, a temperature of 25–27°C and a protein-rich diet. When breeding begins, the male chooses a flat stone or similar surface for the spawn. Courtship follows and can be quite aggressive; this is why a harem is recommended to distribute the male's attention. The female, if receptive, approaches the spawning site and lays dozens of eggs. After fertilization she takes them into her mouth, where they incubate for about a month before the fry emerge. Provide shelter to protect the female during incubation from the male's pestering; without it there is a high risk she will release the eggs prematurely. Some breeders move females to a separate tank for this period. However, prolonged separation from the colony may cause the female to lose her position in the hierarchy and face attack when she returns.

The Blue Zebra is hardy and undemanding. Health problems usually arise from injuries, poor nutrition or unsuitable water conditions with low pH and dGH. Correcting these issues improves the fish's health. If symptoms persist, medication may be needed.

When selecting individuals, look for overall activity and an absence of body damage. Healthy fish show clear territoriality and respond quickly to stimuli. Avoid emaciated fish with sunken bellies or scale damage that may indicate fighting in an overcrowded tank. — Check that the colour matches the claimed colour form, as the species comes in both blue and white varieties. — Prefer fish from tanks where water parameters resemble those of Lake Malawi cichlids. — Observe behaviour in the shop: dominant males often show aggression to neighbours, which is normal, but fish that hide constantly or stay near the surface may be stressed or sick.