Brasilian High-Hat (Geophagus brasiliensis) — 4-5cm

Overview

The Geophagus brasiliensis, commonly known as the Pearl Cichlid or Brazilian High-Hat, is a hardy, attractive South American cichlid celebrated for its shimmering pearl-like markings, engaging digging behavior, and adaptable nature. Originating from southeastern Brazil, Paraguay, Uruguay, and northeastern Argentina, this benthic omnivore thrives in spacious aquariums with sandy substrates and stable water conditions. Available for sale UK from Tropical Fish Co, the pearl cichlid is ideal for aquarists seeking a robust, interactive South American centerpiece with fascinating natural behaviors. With proper care, appropriate tankmates, and stable water parameters, Geophagus brasiliensis offers years of beauty, activity, and rewarding fishkeeping.

Appearance

Geophagus brasiliensis displays a silvery-gray to olive-green body adorned with rows of iridescent blue-green or pearl-like spots and blotches, creating a shimmering, jewel-like appearance. A prominent dark lateral band or blotch is often visible on the mid-body, and the gill covers feature vivid blue-green markings. Fins are typically pale yellow to orange with subtle blue or green edging. Males develop a pronounced nuchal hump and more intense coloration, especially during breeding. Females are slightly smaller and less colorful. Adults reach up to 28 cm, requiring substantial tank space. Juveniles are paler with less pronounced markings but develop full coloration as they mature. The combination of size, coloration, and engaging behavior makes the pearl cichlid a standout in South American biotope aquariums.

Natural Habitat

Geophagus brasiliensis is native to southeastern Brazil (north to Bahia), Paraguay, Uruguay, and far northeastern Argentina, where it inhabits rivers, lakes, and nearby slightly brackish lagoons. These environments feature soft to moderately hard, neutral to slightly acidic water, sandy or muddy substrates, and abundant submerged roots, rocks, and vegetation. Pearl cichlids are benthic omnivores, sifting through substrate to feed on invertebrates, organic detritus, plant matter, and small organisms. They establish territories around shelter and feeding grounds, displaying territorial behavior especially during breeding.

Aquarium Setup

A minimum tank size of 300 litres is essential for adult Geophagus brasiliensis, with larger setups (400+ litres) strongly recommended for groups or mixed South American communities. Provide a sandy or very fine gravel substrate to support natural digging and sifting behavior—these cichlids constantly sift substrate and may rearrange decor. Add smooth rocks, driftwood, and robust plants (Java Fern, Anubias, Vallisneria) to create shelter and visual interest. Ensure powerful filtration capable of handling the bioload and substrate disturbance—use oversized external canister filters. Perform frequent large water changes (30-50% weekly) to maintain water quality. Lighting should be moderate. Avoid sharp decor that may damage the delicate mouth and barbels during sifting. Secure lightweight decor, as these cichlids may rearrange or undermine rockwork during digging.

Feeding

Geophagus brasiliensis is a benthic omnivore that feeds by sifting substrate for invertebrates, organic matter, and plant material. In captivity, provide a varied diet of high-quality cichlid pellets or sinking foods, supplemented with frozen or live foods such as bloodworms, brine shrimp, mysis shrimp, and earthworms. Include vegetable matter such as blanched spinach, spirulina flakes, and algae wafers. Feed once or twice daily, ensuring food reaches the bottom where these cichlids feed. Sinking foods are ideal, as pearl cichlids are bottom-feeders and may ignore surface foods. A balanced, varied diet supports healthy growth, vibrant coloration, and successful breeding.

Behaviour

Pearl cichlids are semi-aggressive, territorial, and highly interactive. They constantly sift substrate, searching for food and rearranging decor. Males establish territories and defend them vigorously, especially during breeding. Pairs form naturally and become highly territorial when spawning and guarding eggs or fry. Outside of breeding, they are relatively peaceful toward other species but may bully smaller or more timid fish. These cichlids are intelligent, curious, and often interact with their keepers. Provide ample space, robust decor, and visual barriers to reduce stress and territorial disputes. Overcrowding or insufficient shelter increases aggression and conflict.

Tank Mates

Suitable tankmates include other robust South American cichlids of similar size (Severums, Acaras, other Geophagus), large peaceful catfish (plecos, larger Corydoras species), and fast, sturdy midwater fish of similar size (silver dollars, larger tetras). Avoid small fish that can be eaten, slow or long-finned species, very timid fish, shrimp, and other small invertebrates. Do not house with overly aggressive cichlids that may provoke constant conflict. Careful stocking, appropriate group sizes, and ample space reduce aggression and create a stable, thriving South American community. Multiple Geophagus can be kept together in larger setups with ample territories.

Breeding

Geophagus brasiliensis is a substrate spawner that forms monogamous pairs. Provide flat rocks, smooth surfaces, or prepared pits in the substrate for spawning sites. Prior to spawning, the pair will clean the chosen surface and display intense coloration and territorial behavior. Females lay several hundred eggs, which both parents guard and fan. Eggs hatch in 3-4 days, and fry become free-swimming after approximately one week. Parents are typically attentive brooders and may continue to guard fry, though in community tanks it is safer to remove fry to a separate rearing tank. Feed fry with infusoria, liquid fry food, or finely crushed quality flakes, progressing to baby brine shrimp. Breeding is more reliable in stable, clean water with appropriate conditions, minimal stress, and a well-matched pair.

Why Buy from Tropical Fish Co

Tropical Fish Co is the UK's premier destination for healthy, vibrant South American cichlids. Our Geophagus brasiliensis specimens are carefully sourced, quarantined, and conditioned to thrive in your aquarium. We provide expert care advice, detailed setup guidance, and ongoing support to help you build a thriving South American biotope. With fast, insured nationwide delivery and a live arrival guarantee, you can shop with confidence. Join thousands of satisfied UK aquarists who trust Tropical Fish Co for quality, expertise, and exceptional service. Discover the beauty of South American cichlids—order your pearl cichlid today.