Calvus Cichlid - Altolamprologus calvus : Complete Fish Profile & Care Guide
Table of contents
Introduction
Calvus Cichlids (Altolamprologus calvus) are renowned for their captivating and visually stunning appearance, making them an attractive choice for experienced hobbyists seeking an engaging aquarium species. However, due to their specific care requirements, they are not recommended for beginners.
When housed appropriately, Calvus Cichlids can thrive in either a species-only setup or as part of a Tanganyikan community with compatible fish of similar size and temperament, such as Cyprichromis, Julidochromis, and Neolamprologus.
To accommodate their needs, a minimum tank size of 5ft with efficient filtration, water movement, and oxygenation is essential. The use of coral sand or aragonite substrate helps maintain water hardness and alkalinity, while darker-coloured substrates offer optimal contrast to highlight their striking colouration. Strategically placed rocks creating small outcrops and numerous caves serve as vital visual barriers and shelters, promoting their well-being.
While Calvus Cichlids may appear slightly menacing, they typically display mild aggression toward each other within the aquarium. To further minimize potential conflicts, breaking lines of sight among the decor can be beneficial. These cichlids are intolerant of poor water conditions, necessitating frequent small partial water changes to ensure optimal water quality.
Calvus Cichlids presents several distinct geographic colour variations, each contributing to the appeal and diversity of this species:
Black Calvus Cichlids: These specimens showcase a striking deep black colouration, separating them from the more commonly observed dark grey hue. This captivating colour pattern creates excellent contrast, particularly against darker substrates, accentuating their unique appearance.
White Calvus Cichlid: The White Calvus Cichlid represents a variety with lighter colouration, transforming the usually dark stripes into a light grey shade, while the body colour becomes nearly white. This colour variation offers an elegant and captivating contrast to other members of the species.
Yellow or Gold Calvus Cichlid: The Yellow and Gold Calvus Cichlids likely refer to the same variety, distinguished by a pronounced yellowish cast. This alluring colouration is relatively rare and may present a more challenging find for enthusiasts seeking to incorporate this particular variant into their collection.
Inkfin Calvus Cichlid: Inkfin Calvus Cichlids exhibit darker-coloured fins and a more irregular striping pattern. Notably, a slight yellowish cast may be visible in areas of lighter colour, further enhancing their unique and intriguing appearance.
The availability of these geographic colour variations adds a captivating dimension to the appeal of Calvus Cichlids, allowing hobbyists and enthusiasts to appreciate the splendid diversity within this remarkable Cichlid species.
Calvus Cichlid Photos
Sexual Dimorphism
Distinguishing between male and female Calvus Cichlids is relatively straightforward, as sexual dimorphism becomes apparent as they mature. Male individuals typically exhibit a larger size, possessing a taller and more robust body structure in comparison to their female counterparts. Additionally, males undergo notable finnage development, showcasing extended and more elaborate fins as part of their distinctive physical characteristics.
Quick Facts
| Scientific Name | Altolamprologus calvus |
|---|---|
| Year Described | 1978 |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Cichliformes |
| Family | Cichlidae |
| Genus | Altolamprologus |
| Origins | Tanzania , Democratic Republic of the Congo , Burundi , Zambia |
| Max Size | 13 cm |
| Temperament | Peaceful |
| Aquarium Level | All Levels |
| Difficulty | Intermediate - Advanced |
| Shoaling | No |
| Best kept as | Groups 6+ |
| Diet & Feeding | Omnivore |
| Reproduction | Egg Depositor |
| Average Lifespan | Up to 10 Years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| pH | 7.5 - 9.0 |
| GH | 15 - 25 |
| ℉ | 76 - 81 |
|---|---|
| ℃ | 24 - 27 |
Natural Habitat
Calvus Cichlids are an endemic species native to the southern shoreline of Lake Tanganyika in eastern Africa. Demonstrating a specific habitat preference, Calvus Cichlids primarily inhabit shallow waters characterized by rocky areas featuring crevices and overhangs. Within these rocky habitats, they seek shelter and protection. Moreover, the sandy substrates interspersed among the rocks play a vital role, serving as the favoured breeding grounds for this species.
Breeding
Calvus Cichlids attain sexual maturity at approximately two years of age, a significant milestone in their reproductive development. As substrate spawners, their breeding behaviour involves depositing eggs in a designated cave, a location chosen by the female, where she can securely fit. Subsequently, the male releases his sperm at the cave entrance, and together, the pair engages in a delicate process of fanning the sperm towards the eggs inside the cave.
Following this carefully orchestrated spawning ritual, the eggs typically hatch within a period of 2 to 4 days, revealing the emergence of fry. After about ten days, the fry undergoes a crucial phase of development, becoming free-swimming and seeking independence.
To optimize the breeding outcome and ensure the survival of the fry, it is recommended to transfer the male parent from the breeding tank at this juncture, as he may pose a threat to the young offspring. Moreover, the presence of larger fry in the same environment might lead to predation on smaller fry, necessitating their separation to safeguard their well-being.
By adhering to these practices, breeders can enhance the success of the breeding process and contribute to the propagation of this remarkable Cichlid species.
Diet & Feeding
Calvus Cichlids, being carnivorous by nature, require a diet predominantly composed of frozen and live meaty foods to ensure their optimal health and well-being.
Among the recommended frozen food choices are black and white mosquito larvae, vitamin-enriched brine shrimp, and krill, all of which provide essential nutrients. While prepared pellet and flake foods can be offered as occasional supplements, they should not constitute the primary diet for these fish, as their nutritional needs are best met with meaty fare.
It is crucial to acknowledge that commercial-prepared Cichlid pellets and flakes generally contain iodine, a vital element essential for their metabolism. However, live and frozen meaty foods might lack this important nutrient.
Consequently, depending on the food source provided, it may be necessary to consider supplementing their diet with iodine to prevent any potential deficiencies. While iodine supplements are commonly utilized in marine aquariums, their incorporation into freshwater tanks represents an unconventional approach that warrants careful consideration and proper monitoring.
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