Pearly Compressiceps (Lamprologus calvus) — 5,5-7cm

Overview

The Pearly Compressiceps, scientifically known as Lamprologus calvus, is an elegant Lake Tanganyika cichlid that offers understated beauty, fascinating behaviour, and manageable care for dedicated African cichlid enthusiasts. Available for tropical fish UK delivery, this species reaches up to 8cm in length and thrives in hard, alkaline water conditions typical of East African rift lakes. A minimum tank of 100 litres is essential to accommodate the Pearly Compressiceps' semi-aggressive temperament and shell-and-cave breeding behaviour. With its pearly sheen, laterally compressed body, and unique hunting strategy, this species is a captivating choice for aquarists seeking to create a Lake Tanganyika biotope or mixed African cichlid community.

Appearance

The Pearly Compressiceps is an elegant, laterally compressed cichlid with a distinctive streamlined profile that allows it to navigate narrow crevices and rocky structures with ease. The body is typically silver to grey with a pearly, iridescent sheen that gives the species its common name. The scales shimmer under aquarium lighting, displaying subtle hints of blue, green, and gold. The dorsal and anal fins are elongated, adding to the fish's graceful appearance. Males may develop slightly more intense coloration and larger size than females, though the difference is subtle. Overall, the Pearly Compressiceps is an understated, elegant cichlid that fits beautifully into naturalistic Tanganyikan setups.

Natural Habitat

Endemic to Lake Tanganyika in East Africa, the Pearly Compressiceps inhabits rocky shorelines, caves, and shell beds. Lake Tanganyika is one of the world's oldest and deepest lakes, known for its hard, alkaline water, high mineral content, and exceptional water clarity. In the wild, Lamprologus calvus use their compressed bodies to hunt for small fish and invertebrates hiding in crevices and among rocks. They are ambush predators, using stealth and patience to capture prey. The lake's stable water chemistry and complex microhabitats have allowed hundreds of cichlid species to evolve, each adapted to specific ecological niches. Replicating these conditions in the aquarium is essential for the health and vitality of Lake Tanganyika cichlids.

Aquarium Setup

A minimum tank size of 100 litres is suitable for a pair of Pearly Compressiceps, though larger tanks provide more stable conditions and reduce aggression. Use a substrate of fine sand, and create a rockscape with plenty of caves, overhangs, and crevices to provide hiding places and spawning sites. Include empty snail shells if available, as these fish may use them for breeding. Ensure the rockwork is stable and securely placed, and leave some open swimming areas. Filtration must be excellent to maintain pristine water quality, with weekly water changes of 25-30% recommended. Use hard, alkaline water (pH 7.5-8.5) and consider adding Tanganyikan-specific buffering products if your tap water is too soft. Subdued lighting and a dark substrate will reduce stress and enhance coloration. Avoid soft-water setups, as these fish require high pH and hardness to thrive.

Feeding

Pearly Compressiceps are primarily carnivorous, feeding on small fish and invertebrates in the wild. In the aquarium, offer quality frozen and live foods such as mysis shrimp, brine shrimp, daphnia, and chopped krill, plus a high-quality cichlid pellet or granule formulated for carnivores. Feed twice daily in small portions that can be consumed within a few minutes, and avoid overfeeding. A protein-rich diet will support health, enhance coloration, and encourage natural hunting behaviour. Variety is important to ensure balanced nutrition and prevent dietary deficiencies.

Behaviour

The Pearly Compressiceps is a slow-moving, deliberate fish that spends much of its time lurking among rocks and caves, waiting patiently to ambush prey. They are intelligent and may learn to recognise their keeper, though they are generally shy and retiring compared to other cichlids. Pairs form strong bonds and may become territorial, especially during breeding. Despite their predatory nature, they are relatively peaceful towards tankmates of similar size and are less aggressive than many other African cichlids. Their unique body shape and hunting strategy make them a fascinating species to observe in a well-structured Tanganyikan aquarium.

Tank Mates

Choose tankmates carefully to avoid conflicts and ensure harmony. Suitable companions include other peaceful to semi-aggressive Lake Tanganyika cichlids of similar size, Tanganyikan catfish such as Synodontis species, and non-aggressive rock-dwelling cichlids with similar water requirements. Avoid small fish that can be swallowed, highly aggressive cichlids, fin-nipping species, fast, boisterous community fish, and species requiring soft, acidic water. The Pearly Compressiceps is not suitable for typical community tanks but thrives in a dedicated Lake Tanganyika setup with carefully chosen tankmates.

Breeding

Pearly Compressiceps are cave or shell-spawning Tanganyikan cichlids that form pairs and lay eggs in a sheltered crevice or shell. The female lays a small number of eggs, and both parents guard and care for the eggs and fry. Provide stable alkaline water, plenty of hiding places, and excellent water quality to encourage breeding. Fry can be raised on newly hatched brine shrimp and finely crushed flakes once free-swimming. The parents may become more aggressive during breeding, so ensure tankmates can handle increased territorial behaviour. Breeding Lamprologus species is a rewarding challenge that showcases the fascinating parental care strategies of Lake Tanganyika cichlids.

Why Buy from Tropical Fish Co

Tropical Fish Co is a leading supplier of freshwater fish for sale UK, offering healthy, well-conditioned Pearly Compressiceps sourced from reputable breeders and quarantined for quality assurance. We provide expert guidance on Tanganyika cichlids for sale UK, water chemistry, tank setup, and compatible tankmates to help you create a thriving Lake Tanganyika aquarium. With secure packaging, reliable cichlids online UK delivery, and a commitment to customer satisfaction, Tropical Fish Co makes it easy to buy tropical fish online UK free delivery. Whether you're building your first Tanganyikan tank or adding to an established collection, our knowledgeable team is here to support your success.