What are mbuna cichlids?
Mbuna (pronounced “mm-BOO-nah”) are a group of rock-dwelling cichlids from Lake Malawi. The name is commonly translated as “rock fish.” In the wild they live along rocky shorelines and graze algae and the small organisms growing on stones. In the aquarium they are known for bright colors, constant activity, and territorial behavior. Popular examples include red zebras and electric yellows.
For an overview of all African cichlid types, see our African cichlid care guide.
Tank size and rockscape
Mbuna need territory and hiding places more than open swimming space. A common recommendation is a tank of around 55 gallons or more for a typical community of mbuna, though some smaller species can be kept in less. A longer tank is generally more useful than a tall one.
Use plenty of stable rockwork with caves, crevices, and visual barriers. Breaking up lines of sight lets weaker fish escape. Place heavy rocks directly on the tank bottom, not on top of sand, so digging does not cause collapse.
Water conditions
Mbuna come from hard, alkaline water. Typical guidance puts temperatures in the mid-70s to low 80s Fahrenheit and pH above neutral, often cited as about 7.8 to 8.6. Strong filtration and regular partial water changes are important, particularly because mbuna are frequently kept in crowded groups. Test your source water first, since your tap water may already suit them.
Feeding mbuna
In nature, mbuna mostly eat algae-associated growth, along with small invertebrates. In the aquarium, a diet built around quality plant-based or spirulina-rich flakes or pellets is commonly recommended. Too much protein, such as large amounts of meaty foods, is often linked to digestive problems like bloat in herbivorous cichlids (see fish bloating symptoms for what to watch for). Occasional vegetables such as blanched spinach or peas are sometimes offered. Feed small portions and avoid leaving uneaten food.
Why mbuna are aggressive and how stocking helps
Mbuna defend territory, and males often chase rivals and similar-looking fish. A common strategy is to keep a fairly well-stocked tank with several females per male and multiple species so that no single fish takes all the aggression. This only works when the tank is large enough and has strong filtration and many hiding spots. It is not a substitute for adequate space.
Tips for reducing problems:
- Keep more females than males.
- Avoid species with very similar colors in the same tank.
- Rearrange rocks when adding new fish so territories reset.
- Be prepared to separate or rehome a persistent bully.
Because aggression varies by species and individual, there is no guarantee any combination will work. Research each species before buying.
What fish can be kept with mbuna?
The safest tank mates are other robust Lake Malawi fish that tolerate the same hard, alkaline water. Other mbuna are the most common companions. Some keepers add robust Malawi fish from other groups, but many are too passive or are bullied by mbuna. Peaceful, slow, or delicate fish usually do poorly with them.
Fish from other regions that require soft or acidic water are generally poor matches. For a less aggressive group that does better with some peacefuls, read about peacock cichlid tank mates.
Which African cichlids stay small?
Several mbuna remain relatively small, often in the range of about 3 to 5 inches as adults, though sizes vary by species. Electric yellow cichlids are a commonly cited example. Many Tanganyikan shell-dwellers also stay small, but they have different water and substrate needs. Check the adult size of any species before buying.
Popular mbuna species
- Red zebra (Maylandia estherae): A colorful, commonly sold species with several color forms. See red zebra cichlid care.
- Electric yellow (Labidochromis caeruleus): A bright yellow, relatively mild species for mbuna. See electric yellow cichlid care.
- Other mbuna are sold under names like Kenyi, Demasoni, and Johanni, which differ in temperament. Research them individually.
Do mbuna breed easily?
Many mbuna breed readily in captivity. They are maternal mouthbrooders: after spawning, the female collects the eggs in her mouth and carries the developing young for a few weeks. She may eat little during this time and may be harassed, so a quiet area or separate tank can help. Plan ahead for what to do with the fry, because even a few spawns can lead to overcrowding.