Corumba Dwarf Dichlid (Apistogramma commbrae) — XL

Overview

Apistogramma commbrae, commonly known as the Corumba Dwarf Cichlid, is a beautiful and compact South American dwarf cichlid that brings engaging behaviour and stunning breeding colours to carefully planned aquariums. Originating from the Paraguay River basin, particularly the Corumbá region of Brazil and adjacent floodplain waters in Paraguay and Bolivia, this rare species is highly sought after by experienced fishkeepers. Available for sale UK from Tropical Fish Co, this freshwater fish for sale UK is perfect for those seeking a characterful addition to a peaceful biotope setup.

Growing to just 4cm, the Corumba Dwarf Cichlid is an ideal choice for planted aquariums and species tanks where their natural behaviours can shine. Males display vibrant colours during breeding, and their semi-aggressive temperament means they require thoughtful tank planning. This South American dwarf cichlid thrives in soft, acidic water and is best suited to intermediate aquarists who appreciate the nuances of dwarf cichlid care.

Appearance

Apistogramma commbrae showcases the classic elegant proportions of dwarf apistogramma species, with a slender body and delicate finnage that becomes even more impressive during breeding periods. Males develop rich colours including yellows, blues, and subtle reds, particularly around the face and fins, while females remain more subdued with brownish-yellow tones and a rounded belly when gravid.

The species is named after the Corumbá region where it was first collected, and its appearance reflects its blackwater habitat origins. Extended dorsal and caudal fin rays in males create an impressive display during courtship, while both sexes exhibit the characteristic lateral stripe common to many Apistogramma species. At just 4cm adult size, these fish pack remarkable personality into a compact package.

Natural Habitat

The Corumba Dwarf Cichlid inhabits slow-moving tributaries, flooded forests, and shallow marginal areas of the Paraguay River basin in South America. These environments are characterised by soft, acidic water stained dark brown by decomposing leaf litter and tannins from submerged wood. The substrate is typically fine sand or silt covered with fallen leaves, branches, and root tangles.

Water movement is minimal in their natural habitat, with dense overhead vegetation providing dappled shade. During the wet season, these fish inhabit flooded forest floors where they forage among leaf litter for small invertebrates and insect larvae. Temperatures remain stable year-round between 22-26°C, and the water is naturally soft with minimal mineral content.

Aquarium Setup

A minimum 75-litre aquarium is recommended for a pair or small group of Apistogramma commbrae, with larger tanks required if housing them in a community setup. The aquarium should replicate their natural blackwater habitat with fine sand substrate, plenty of driftwood, and leaf litter covering areas of the tank floor. Indian almond leaves or oak leaves are excellent additions that release beneficial tannins while providing hiding places.

Subdued lighting is essential, achieved either through floating plants or dimmed fixtures. Dense planting around the perimeter creates security while leaving open swimming space in the centre. Multiple caves and sheltered areas are crucial, especially when breeding, as females will select and defend a spawning cave. Use small terracotta pots, coconut shells, or purpose-made caves positioned throughout the lower third of the tank.

Filtration should be efficient but gentle, as these fish dislike strong currents. A sponge filter or canister filter with spray bar output works well. Water quality must be pristine, so perform regular small water changes of 20-30% weekly, ensuring replacement water matches temperature and parameters closely.

Feeding

Apistogramma commbrae is a carnivore requiring a varied meaty diet to maintain optimal health and coloration. In the aquarium, offer quality micro-pellets formulated for carnivorous cichlids as a staple, supplemented regularly with frozen or live foods including daphnia, brine shrimp, bloodworms, and other small insect larvae.

Live foods help condition breeding pairs and enhance coloration dramatically. Frozen alternatives should be thoroughly thawed and rinsed before feeding. Feed small portions twice daily rather than one large meal, as these small cichlids have modest appetites and excess food will pollute the water. During breeding periods, increase protein content with live or frozen foods fed 2-3 times daily.

Avoid dry flake foods as the primary diet, as these don't provide the nutrition or enrichment that frozen and live foods offer. Occasional plant-based matter can be offered, though this species is primarily carnivorous and will derive most nutrition from protein sources.

Behaviour and Temperament

The Corumba Dwarf Cichlid exhibits typical Apistogramma behaviour, being moderately active and spending most time exploring the lower levels of the aquarium. Males are territorial, especially when breeding, and will establish and defend small territories centred around caves or sheltered spots. Despite their semi-aggressive classification, they're generally peaceful toward appropriately chosen tankmates and their aggression is primarily directed at rival males.

Females are more peaceful and timid, often hiding until they become comfortable in their environment. Once settled, both sexes demonstrate engaging personalities, with males performing elaborate displays including fin-spreading, body-tilting, and shimmering movements to attract females or warn competitors. These displays are fascinating to observe and a major appeal of keeping dwarf cichlids.

Best kept as a male with 2-3 females in larger tanks, or as a proven pair in smaller setups. Multiple males require tanks of 150 litres or more with ample visual barriers to prevent constant confrontation.

Tank Mates

Apistogramma commbrae is compatible with small peaceful tetras such as Cardinal Tetras, Rummy Nose Tetras, and Ember Tetras that occupy upper water layers. Rasboras including Harlequin Rasboras are also suitable, as are small peaceful livebearers in larger tanks. Corydoras catfish make excellent bottom-dwelling companions as they share similar water requirements and occupy different ecological niches.

Otocinclus algae eaters and small pencilfish like Nannostomus species work well in planted setups. All tankmates should be peaceful, small enough not to intimidate the Apistogramma, yet not so tiny that they become targets during breeding aggression. Avoid overstocking, as these dwarf cichlids appreciate calm environments with minimal competition.

Incompatible species include large or boisterous cichlids that will stress or outcompete them, fin-nipping fish like Tiger Barbs or Serpae Tetras, aggressive bottom dwellers such as larger Loricariid catfish, very active large barbs, and predatory fish. When breeding, even normally peaceful tankmates may be chased away from the spawning area.

Breeding

Apistogramma commbrae is a cave spawner, with breeding typically occurring when water conditions are optimal and the fish are well-conditioned on high-quality foods. Females select a suitable cave and clean the interior before spawning. Males court females with elaborate displays, and once the female is receptive, spawning occurs inside the chosen cave.

The female lays 50-100 eggs on the cave ceiling or walls, which she then guards ferociously while the male defends the surrounding territory. Eggs hatch in 2-3 days at 26°C, and fry become free-swimming after approximately one week. The female provides intensive brood care, fanning the eggs and moving fry to different locations if she perceives danger.

Soft, acidic water with pH 5.5-6.5 and temperatures around 26°C improve breeding success significantly. Provide multiple caves so the female has choice, and increase water changes with soft, cool water to simulate rainy season conditions. Fry can be raised on infusoria for the first few days, then newly hatched brine shrimp and micro worms. Parents may eat fry if stressed, so provide ample cover and minimize disturbance during the critical first two weeks.

Why Buy from Tropical Fish Co

When you buy tropical fish UK from Tropical Fish Co, you're choosing a specialist retailer committed to providing healthy, carefully selected livestock. Our Apistogramma commbrae specimens are quarantined, acclimatised to UK water conditions, and feeding well before dispatch. We offer expert advice on dwarf cichlid care, ensuring your South American dwarf cichlid thrives from the moment it arrives.

With fast, secure delivery throughout the UK and dedicated customer support, Tropical Fish Co makes it easy to acquire rare tropical fish UK for your collection. Whether you're setting up your first species tank or expanding an existing biotope aquarium, our team provides the guidance you need. All livestock is backed by our health guarantee, and we're always available to answer questions about dwarf cichlid tank setup, water parameters, and compatible tankmates for your Corumba Dwarf Cichlid.