Pertensis Dwarf Cichlid (Apistogramma pertensis) — 3-4cm

Overview

Freshwater fish for sale UK enthusiasts seeking a jewel-like South American dwarf cichlid need look no further than Apistogramma pertensis. This beautifully patterned micro-predator hails from the soft, acidic blackwater tributaries of the Amazon Basin, particularly the Santarém region of Brazil. With its intricate finnage, subtle yet striking coloration, and fascinating breeding behaviours, the Pertensis Dwarf Cichlid is a favourite among aquarists who appreciate planted aquariums and biotope setups. Reaching just 3.5cm at maturity, this species combines manageable size with outsized personality, making it ideal for nano and medium-sized aquariums. Available for sale UK through specialist retailers, it rewards careful husbandry with vibrant displays and engaging social interactions.

Appearance

Apistogramma pertensis showcases the classic Apistogramma body plan: laterally compressed, elongated, and adorned with extended finnage in mature males. Males display intricate patterning with horizontal stripes, iridescent blue or green highlights along the flanks, and vibrant yellow or orange accents in the fins. The caudal fin often features a lyre-shaped extension with bold markings. Females are smaller, more subdued in colour, and adopt a golden-yellow hue when guarding eggs or fry. The species' beauty is most pronounced in soft, tannin-stained water under subdued lighting, where the fish's colours truly pop.

Natural Habitat

This species inhabits slow-moving blackwater streams, flooded forest margins, and shallow pools in the Brazilian Amazon. The water is typically soft, acidic, and stained dark with tannins from decomposing leaf litter. Submerged roots, fallen branches, and dense aquatic vegetation provide shelter and hunting grounds for small invertebrates. The substrate is usually fine sand or silt littered with organic debris. These stable yet nutrient-rich environments support a diverse micro-ecosystem, and replicating these conditions in the aquarium is key to keeping Apistogramma pertensis thriving.

Aquarium Setup

A minimum 75-litre aquarium is recommended, ideally densely planted with species such as Amazon swords, Cryptocoryne, and floating plants to diffuse lighting. Use fine sand substrate and incorporate driftwood, leaf litter (Indian almond leaves work well), and smooth stones to create caves and visual barriers. Gentle filtration through a sponge or canister filter maintains water quality without creating excessive current. Tannin-stained water not only mimics natural conditions but also supports the fish's immune system. Maintain low to moderate lighting to reduce stress and encourage natural behaviours.

Water Parameters

Apistogramma pertensis is sensitive to water chemistry and demands soft, acidic conditions. Aim for temperatures between 24-27°C and pH from 5.5-7.0, with hardness on the lower end of the scale. Regular partial water changes with dechlorinated, appropriately conditioned water are essential. Avoid sudden fluctuations in temperature or chemistry, as this species is prone to stress-related illnesses. Efficient biological filtration and low nitrate levels (below 20 ppm) are critical for long-term health.

Feeding

This carnivore thrives on a protein-rich diet. Offer high-quality micro pellets or granules formulated for dwarf cichlids, supplemented generously with live or frozen foods such as bloodworms, daphnia, brine shrimp, and small insect larvae. Variety is essential to ensure balanced nutrition and vibrant coloration. Feed small portions twice daily, removing uneaten food promptly to maintain water quality. Avoid large or oily foods that can foul the water or cause digestive issues.

Behaviour

Apistogramma pertensis is a semi-aggressive species with strong territorial instincts, particularly in males. However, in a well-structured aquarium with plenty of hiding places, aggression is usually limited to displays and posturing. Males establish and defend small territories, especially during breeding. Females become fiercely protective when guarding eggs or fry. The species is generally peaceful toward non-competing tankmates and spends much of its time exploring the lower levels of the aquarium, investigating crevices and foraging in leaf litter.

Tank Mates

Ideal companions include small, peaceful schooling fish such as tetras (cardinal, rummy-nose), rasboras, and peaceful pencilfish. Bottom-dwellers like Otocinclus and small Corydoras species are usually tolerated, provided the tank is large enough to prevent territorial overlap. Avoid large aggressive cichlids, fin-nipping barbs, boisterous community fish, and other highly territorial bottom dwellers. Very small shrimp and fry may be predated.

Breeding

Breeding Apistogramma pertensis is a highlight for many aquarists. Spawning typically occurs in a cave or sheltered crevice, where the female lays adhesive eggs on a flat surface. The female then assumes sole responsibility for guarding and fanning the eggs, while the male patrols the surrounding territory. Eggs hatch in 2-3 days, and fry become free-swimming after about a week. Feed fry on infusoria or liquid fry food initially, transitioning to newly hatched brine shrimp. Soft, acidic water and stable conditions significantly improve breeding success.

Why Buy from Tropical Fish Co

Tropical Fish Co is the UK's premier destination for rare and specialist South American dwarf cichlids, including Apistogramma pertensis. Every fish is ethically sourced, carefully quarantined, and health-checked by our expert team before dispatch. We provide detailed care guides, personalised advice, and ongoing support to ensure your success. With secure, temperature-controlled delivery across the UK, comprehensive online resources, and a passion for quality livestock, Tropical Fish Co makes it easy to build stunning planted aquariums and biotope displays. Trust us to deliver healthy, vibrant fish and exceptional customer service every time.