Calvus Cichlid

Calvus Cichlid (Altolamprologus calvus)

The Calvus Cichlid is one of the most elegant and distinctive species you can add to a freshwater aquarium. Native to the rocky shorelines of Lake Tanganyika in East Africa, this striking fish is prized for its compressed, laterally flattened body shape, unique scale patterning, and calm, calculated behavior. Its graceful swimming style and fascinating personality make it a favorite among aquarists who appreciate both beauty and subtlety in their fish tanks.

Calvus Cichlids are available in several color variations, including black, white, and yellow, each displaying intricate spotting and vertical barring. Their slow growth rate and long lifespan make them a long-term commitment for dedicated fishkeepers. These cichlids are relatively peaceful compared to many African cichlids, making them suitable for carefully selected community setups with other Tanganyikan species or similarly tempered fish.

One of the most appealing traits of the Calvus Cichlid is its hunting style. In the wild, it uses its narrow body to slip between rocks and shells in search of small crustaceans, fry, and insect larvae. In the aquarium, it retains this behavior, often taking its time to stalk and strike with precision. They thrive in rock-heavy aquascapes with plenty of caves and hiding places, mimicking their natural habitat.

In terms of care, Calvus Cichlids prefer stable, hard, alkaline water conditions typical of Lake Tanganyika. A pH between 7.8 and 9.0, moderate to high mineral content, and a temperature of 24–27°C (75–80°F) will help them flourish. They are not overly aggressive feeders but will appreciate a varied diet of high-quality pellets, frozen foods, and occasional live treats to bring out their natural hunting instincts.

Because of their unique appearance, deliberate movements, and compatibility with other Tanganyikan fish, the Calvus Cichlid is often seen as a must-have for African cichlid enthusiasts. Whether you keep them in a species-only tank or as part of a mixed Tanganyika setup, they will add an understated elegance that stands out in any freshwater display.

Learn more about Lake Tanganyika’s fish biodiversity from Britannica

Frequently Asked Questions (FAQs)

1. How big do Calvus Cichlids grow?
They typically reach around 13–15 cm (5–6 inches) in length when fully grown.

2. Are Calvus Cichlids aggressive?
They are relatively peaceful for African cichlids, though they can be territorial during breeding.

3. Can I keep them with other cichlids?
Yes, but they do best with other Tanganyikan species or calm tank mates that can handle similar water parameters.

4. What is their lifespan?
With proper care, they can live for 8–10 years, sometimes longer in optimal conditions.

5. What kind of tank setup do they need?
A rock-filled aquarium with plenty of caves and stable, alkaline water conditions is ideal.