Altolamprologus compressiceps

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Altolamprologus compressiceps, also sold as Fire Fin Calvus, is an iconic cichlid from Lake Tanganyika. Its laterally compressed body, steep forehead and orange-edged fins give it an immediately recognizable appearance. Despite its moderate size, this discreet predator has a territorial nature and a strong personality. It appreciates rocky aquariums with plenty of structure, where it can retreat into crevices and hunt small prey. This species is best suited to aquarists who can maintain alkaline, mineral-rich water, excellent water quality and carefully selected tankmates.

General species description

Altolamprologus compressiceps is a shell-dwelling and rock-associated cichlid from Lake Tanganyika, usually found around rocky areas and shell beds. It moves precisely through narrow spaces because of its strongly laterally compressed body. Its predatory diet consists of small crustaceans, larvae and juvenile fish. In an aquarium, it is often peaceful when provided with enough shelter, but it vigorously defends its territory, especially while breeding. It is not an obligate schooling fish: a bonded pair can live in a properly arranged aquarium, while a group requires more space and numerous visual barriers. Efficient filtration, regular water changes and stable hardscape are essential. Fire Fin Calvus is a commercial form associated with fish showing orange to reddish fins. Its commercial rarity is low, making it relatively accessible to aquarists specializing in Tanganyikan cichlids.

Geographical origin and biotope

The species comes from Lake Tanganyika in East Africa, particularly coastal areas of Tanzania. The lake is a vast ancient environment with deep, clear water that is strongly buffered and rich in dissolved minerals. Altolamprologus compressiceps inhabits rocky habitats, rubble zones and transitions between rocks and sandy bottoms, where cracks provide shelter and observation posts. Aquatic vegetation is generally limited in rocky areas; the environment is mainly defined by stones, sand and empty shells. In an aquarium, provide many narrow cavities without creating traps in which the fish could become stuck. Stable, warm and distinctly alkaline water is more important than strong current. Rocks should be firmly placed before adding substrate, since this species may move sand during digging and breeding activities.

Precise locality and local name

In the aquarium trade, Fire Fin Calvus is associated with populations from the Tanzanian coast of Lake Tanganyika, including fish distributed under locality names such as Chaitika. These names are mainly used to distinguish populations or commercial lines according to origin and coloration. “Calvus” is the most widely used aquarium common name, while Fire Fin describes the warm coloration of the fins. When the locality is known, it is preferable to retain that information to avoid mixing visibly different populations. Individuals may display blue, gray, brown and orange tones depending on origin, mood and condition. Color often becomes stronger when the fish is relaxed, well fed or engaged in territorial behavior. A rocky layout inspired by Tanganyika’s shoreline makes it easier to observe its movements and interactions.

Appearance and physical characteristics

The body of Altolamprologus compressiceps is deep, elongated and extremely laterally compressed, a remarkable adaptation to life in rocky crevices. The head appears broad and flattened, with a pronounced forehead and forward-facing mouth suited to capturing prey. The scales are usually gray-blue to silvery brown, sometimes with metallic reflections. The dorsal, anal and caudal fins may show orange, red or amber tones in the Fire Fin form. The dorsal and anal fins are extended, giving the fish an elegant profile. Its relatively large eyes assist hunting in dimly lit areas. Adults reach approximately 15 cm in total length, with males generally larger and more robust. The compressed body is its clearest distinguishing feature, while fin coloration varies according to population and the condition of the specimen.

General diet

Altolamprologus compressiceps is an opportunistic predator that searches for small prey among rocks, inside shells and across the substrate. In nature, its diet includes small crustaceans, aquatic larvae and juvenile fish. In an aquarium, it accepts quality meaty foods such as finely chopped shrimp, small krill, mysis and sinking pellets made for carnivorous cichlids. Prey should be appropriately sized for its mouth. Offer small portions once or twice daily rather than one oversized meal. A varied diet supports body condition and coloration, but very rich foods should not become the foundation of the diet. Live or frozen foods can stimulate hunting behavior, especially in newly acclimated specimens. Avoid overfeeding and monitor competition from faster fish. A diet made up mostly of appropriately sized animal protein suits this specialist of rocky habitats.

Essential data

• Name of original river: Lake Tanganyika
• Local name used: Calvus; Fire Fin Calvus in the aquarium trade
• Origin of the scientific name: The name was assigned by George Albert Boulenger when the species was described
• Complete name etymology: Altolamprologus roughly means “high or elevated Lamprologus”; compressiceps means “compressed head”
• Common/vernacular names: Calvus; Fire Fin Calvus
• Family: Cichlidae
• Subfamily: Pseudocrenilabrinae
• Name pronunciation: al-toh-lam-proh-loh-gus kom-PRESS-ee-seps
• Discovery: George Albert Boulenger, 1898
• Maximum adult size: Approximately 15 cm
• Water temperature and pH: 24 to 27 °C; pH 8.0 to 9.0
• Appearance of the watercourse and surrounding vegetation: Deep, clear and rocky lake; limited aquatic vegetation in rocky areas
• Typical tankmates: Cyprichromis leptosoma, Neolamprologus leleupi, Neolamprologus cylindricus, Synodontis petricola
• Temperament and behavior: Discreet, territorial predator, generally calm outside its territory
• Water depth: Rocky shoreline areas and relatively deep sectors
• Sexual dimorphism: Male generally larger and more robust; juveniles can be difficult to sex
• Bottom structure and flow: Rocks, rubble, sand and shells; low to moderate water movement

In your aquarium

To succeed with Altolamprologus compressiceps, choose a spacious, rocky and well-filtered aquarium with many narrow shelters. Maintain warm, alkaline and stable water, then feed a varied meaty diet in small portions. Avoid tankmates that are excessively aggressive or small enough to be swallowed. A firmly constructed layout, gradual acclimation and regular water changes will help this cichlid maintain its health and coloration. Patience is especially valuable while a pair is forming.