False blochi Catfish (Corydoras delfox) — 2,5-3cm

Overview

The Corydoras delfox, commonly known as the False Blochi Catfish, is a peaceful, social bottom-dweller offering cory catfish for sale UK enthusiasts an easy-to-care-for addition to well-planted community aquariums. Native to freshwater river systems in the Amazon basin and adjacent drainages of South America, this compact species grows to around 3.8 cm in captivity. Its gentle temperament, constant activity, and cleanup value make it a popular choice for peaceful community setups. At Tropical Fish Co, we supply healthy juveniles that adapt quickly to aquarium life and reward attentive care with years of engaging, social behavior.

Appearance and Coloration

Corydoras delfox displays a pale cream or silver base color with subtle dark mottling and faint banding along the flanks. The body is compact and armored, typical of the Corydoras genus, with a rounded snout and sensitive barbels adapted for substrate exploration. The fins are semi-translucent with faint pigmentation, and the dorsal fin is upright and well defined. Under subdued lighting, the mottled pattern provides gentle camouflage against natural décor. Juveniles at 2.5–3 cm show the same understated coloration as adults, which remains consistent throughout their lifespan.

Natural Habitat and Distribution

Exact wild origin is uncertain in the aquarium trade, but Corydoras species are generally from freshwater river systems in the Amazon basin and adjacent drainages. These habitats feature soft, acidic water with abundant leaf litter, submerged wood, and fine sediment. Water temperatures are stable between 24–27 °C, and the environment is dimly lit with slow to moderate current. Corydoras species are diurnal, actively foraging during daylight hours in small groups. Replicating these soft-water conditions at home encourages natural behavior and optimal health.

Aquarium Setup and Décor

A 40-litre aquarium is suitable for a small group of five to seven Corydoras delfox. Keep on soft sand or very smooth fine substrate to protect their barbels; avoid sharp gravel. Décor should include driftwood, rounded stones, and live plants such as Java fern, Anubias, and Amazon swords. Floating plants help diffuse lighting and create shaded zones. Avoid sharp-edged decorations or coarse substrates, which can damage the barbels and lead to infection. A secure lid is recommended, as Corydoras occasionally dart to the surface for gulps of air. They are social fish and should be kept in a proper group.

Feeding and Nutrition

Corydoras delfox is an omnivore that thrives on a varied sinking diet. Offer quality sinking catfish pellets or wafers as a staple, supplemented with frozen or live foods such as bloodworms, daphnia, brine shrimp, plus occasional vegetable-based foods like blanched courgette or spinach. Feed after lights dim if necessary to ensure food reaches the substrate before mid-water fish consume it. Sinking foods prevent competition and allow the catfish to forage naturally along the bottom. Feed once or twice daily in small portions.

Behaviour and Social Structure

These catfish are highly social and must be kept in a proper group of at least five individuals to display confident, natural behavior. In smaller numbers they become shy and stressed, spending most of their time hidden. A well-adjusted shoal will actively forage across the substrate throughout the day, sifting sand through their gills and occasionally resting on plant leaves or driftwood. They are peaceful and compatible with a wide range of community fish. Males may engage in mild chasing during feeding, but aggression is extremely rare.

Compatible Tank Mates

Ideal companions include small peaceful tetras (neon, cardinal, ember), rasboras (harlequin, chili), dwarf gouramis, livebearers (guppies, platies), and small peaceful rainbowfish. Avoid housing with large aggressive cichlids, fin-nipping barbs, large predatory fish, highly territorial bottom-dwellers, or very boisterous species that outcompete them for food. Small shrimp can coexist if the tank is well planted and offers hiding spaces.

Breeding in the Aquarium

Like most Corydoras, they are egg scatterers that usually breed after a cooler water change and abundant live or frozen foods. Provide fine-leaved plants or spawning mops and remove adults after spawning to prevent egg predation. Males are slightly smaller and more streamlined than the plumper females. Eggs are typically laid on glass, plants, or décor. Fry require infusoria or liquid fry food initially, graduating to micro-worms and finely crushed flake within a week. Breeding success is achievable with patience and excellent water quality.

Why Buy from Tropical Fish Co

At Tropical Fish Co, every False Blochi Catfish is quarantined, health-checked, and acclimated to UK water conditions before dispatch. We source our fish from reputable suppliers who prioritize ethical collection and sustainable practices. Our livestock arrives in insulated packaging with heat packs during colder months, ensuring safe transit. With decades of combined fishkeeping experience, our team is available to answer questions about care, compatibility, and tank setup. Whether you're building a planted community or expanding an established aquarium, we're here to support your success. Order with confidence and enjoy premium freshwater fish delivered to your door.