Lamprologus crassus 5 - (Lamprologus crassus) — 5-6cm

Overview

African cichlids for sale UK enthusiasts seeking a compact, fascinating species will find Lamprologus crassus an excellent choice for Lake Tanganyika biotope aquariums. This small cichlid is endemic to Lake Tanganyika in East Africa, where it inhabits rocky shorelines and rubble zones. Available for sale UK in sizes from 3.5-6cm, the species reaches only 3.5cm at maturity, making it one of the smallest African cichlids and suitable for nano and small aquariums with appropriate water chemistry. Semi-aggressive temperament, specialized care requirements for hard alkaline water, and fascinating breeding behavior appeal to aquarists with experience maintaining Tanganyikan cichlids. Moderate care level suits those familiar with African rift lake conditions but may challenge aquarists accustomed to soft, acidic water species.

Appearance

Lamprologus crassus features a compact, robust body with a slightly compressed profile. Coloration typically includes shades of brown, tan, or grey with darker vertical barring or mottling that provides camouflage among rocks and rubble. Some individuals display subtle blue or iridescent highlights on the face or flanks, particularly under optimal conditions. Males develop slightly larger size and more pointed dorsal and anal fins compared to females. The head is proportionally large with a blunt snout and moderately sized mouth. All fins display delicate patterns or faint banding. Coloration intensifies during breeding condition, with males showing more vivid tones and defined patterns. Overall appearance is understated but attractive, rewarding close observation in well-maintained Tanganyikan setups.

Natural Habitat

This species is endemic to Lake Tanganyika, one of the African Great Rift Lakes, where it inhabits rocky shorelines, rubble zones, and sediment-covered rock substrates at various depths. Water conditions are highly stable year-round: hard, alkaline (pH 7.8-9.0), warm (24-27°C), and extremely well-oxygenated. Natural habitat features include piles of rocks, crevices, caves, and broken shell beds that provide hiding places and spawning sites. The species forages among rocks and rubble for small invertebrates, insect larvae, zooplankton, and organic particles. Lake Tanganyika's unique chemistry, clarity, and biodiversity make it one of the world's most specialized aquarium biotopes.

Aquarium Setup

A minimum 40-litre aquarium provides suitable housing for a pair or small group of Lamprologus crassus. Use fine sand or crushed coral substrate and arrange rocks, slate, and ceramic caves to create multiple territories and hiding places. Each individual or pair requires at least one secure cave or crevice for shelter and spawning. Provide visual barriers using strategically positioned rocks to reduce aggression and allow subordinate fish to escape dominant individuals. Maintain excellent water quality with efficient filtration and strong water movement to replicate the well-oxygenated conditions of Lake Tanganyika. Moderate to bright lighting suits the species, though subdued areas should also be available. Ensure the tank is well-covered, as Tanganyikan cichlids occasionally jump when startled.

Water Parameters

Maintaining proper water chemistry is critical for Lamprologus crassus. Keep temperatures between 23-27°C, with 24-26°C representing optimal conditions. pH must remain between 7.5-8.5, with values around 8.0-8.2 ideal to replicate Lake Tanganyika's alkaline conditions. Water hardness should be moderately hard to very hard (10-20 dGH), with high carbonate hardness (KH) essential for pH stability. Ammonia and nitrite must be undetectable, while nitrates should stay below 30 ppm through efficient biological filtration and weekly water changes of 25-30%. Use Tanganyikan salts or buffer additives to maintain proper mineral content and pH. Avoid soft, acidic water, which stresses the fish and causes health decline. Stability is paramount—abrupt changes in pH or hardness can shock or kill Tanganyikan cichlids.

Feeding

Lamprologus crassus is primarily carnivorous, requiring a diet of small meaty foods. Offer quality small cichlid pellets designed for Tanganyikan species, supplemented with frozen or live foods such as brine shrimp, mysis shrimp, daphnia, cyclops, and finely chopped meaty foods. Feed small portions once daily or every other day in amounts consumed within 1-2 minutes. Avoid overfeeding, which rapidly degrades water quality and leads to digestive issues. A varied diet supports healthy growth, vibrant coloration, and breeding condition. Ensure food is appropriately sized for the species' small mouth—large pellets or chunks may be rejected or create feeding difficulties.

Behaviour

Lamprologus crassus is semi-aggressive and territorial, particularly during breeding periods or in undersized tanks. Individuals or pairs claim and defend caves or rocky territories, chasing intruders with rapid dashes and posturing. Within appropriate tank size and rockwork complexity, aggression remains manageable and rarely results in serious injury. The species is primarily crepuscular and nocturnal in the wild but adapts to daytime activity in aquariums, especially during feeding. Males may display intensified coloration and perform courtship rituals to attract females. The species is intelligent and responsive, quickly learning feeding routines and recognizing keepers. Stress or inadequate territories cause increased hiding, faded coloration, or heightened aggression.

Tank Mates

Selecting tankmates for Lamprologus crassus requires careful consideration of size, temperament, and water chemistry requirements. Suitable companions include other small Lake Tanganyika cichlids of similar size and temperament, robust shell-dwellers (Neolamprologus species), and non-aggressive Tanganyikan catfish (Synodontis petricola). Avoid small peaceful fish, species requiring soft acidic water, highly aggressive large cichlids, and fin-nippers. In smaller tanks, species-only setups or carefully paired tankmates reduce conflict. Larger aquariums with extensive rockwork and visual barriers allow more diverse Tanganyikan communities, though compatibility should be researched thoroughly before mixing species.

Breeding

Lamprologus crassus is a cave or shell spawner that breeds readily in stable hard alkaline water. Provide multiple caves, rock crevices, or empty snail shells per fish to allow pairs to establish territories. A bonded pair will claim a spawning site, with the female depositing eggs inside the cave and both parents guarding the site. Eggs hatch in 2-3 days, and fry become free-swimming within a week. Parents typically care for fry initially, though in community tanks, fry should be separated to prevent predation by tankmates. Fry require finely powdered foods or newly hatched brine shrimp. Breeding success depends on stable water chemistry, adequate territories, and low stress.

Why Buy from Tropical Fish Co

Tropical Fish Co supplies healthy, active Lamprologus crassus specimens carefully selected for good body condition and strong behavior. We ensure all fish are feeding confidently on prepared foods and displaying normal territorial behavior before dispatch. Our expert team provides comprehensive care guidance covering the critical importance of hard alkaline water, tank setup, feeding, and breeding. With reliable UK delivery using specialist livestock couriers, your cichlids arrive safely in insulated packaging with oxygen. We support specialist Tanganyikan fishkeeping and offer ongoing advice to help you succeed with this fascinating dwarf cichlid. Choose Tropical Fish Co for quality African cichlids and expert customer support.