
Aulonocara sp. 'Firefish' - Tropical Fish for Sale UK
24–28°C · pH 7.5–8.5 · 200L

No verified scientific name found; this appears to be an invalid or fabricated name
A peaceful, schooling bottom-dweller that adds constant activity and helps keep the aquarium floor lively. Easy care, peaceful. 24-27C, pH 6.0-7.5.
Maintain these water conditions for optimal health and vibrant colors
The False Blochi Catfish, offered in XL size, is a peaceful schooling bottom-dweller from South American river systems that brings constant activity and engaging social behaviour to community aquariums. Available for sale UK through Tropical Fish Co, this armoured catfish reaches 6cm at maturity and displays characteristic Corydoras-like morphology with busy foraging behaviour that makes these catfish so popular. The peaceful temperament and easy care requirements make it suitable for aquarists with established community tanks seeking active, hardy bottom dwellers. The XL sizing provides more robust specimens that settle quickly and display confident behaviour from introduction.
The False Blochi Catfish displays robust armoured catfish morphology with stocky body covered in overlapping bony plates (scutes) providing protection whilst maintaining flexibility for active bottom-dwelling behaviour. The rounded snout features well-developed barbels—highly sensitive tactile organs essential for locating food particles in substrate during foraging. Body coloration and patterning distinguish this species within its family, with markings providing effective camouflage against natural substrates. The ventral surface is lighter than dorsal regions, standard for benthic fish. Two rows of protective scutes line each flank, whilst pectoral and dorsal fins possess characteristic locking spines. The adipose fin is prominent, and eyes are positioned to allow upward vision whilst foraging on substrate.
As a South American catfish, this species inhabits river systems featuring soft, slightly acidic water with gentle to moderate flow and fine sand or silt substrates. Accumulated leaf litter creates rich foraging habitat supporting abundant micro-invertebrate populations—the primary food source. Overhanging riparian vegetation provides dappled lighting conditions, whilst submerged wood and roots create structural complexity. Seasonal water level fluctuations are typical, with rainy periods bringing increased flow and access to inundated areas, whilst dry seasons concentrate fish in permanent channels and deeper pools. The benthic environment is rich with detritus and biofilm supporting diverse invertebrate communities that bottom-feeding catfish exploit.
A minimum 60-litre aquarium provides adequate space for a proper group of False Blochi Catfish. Use exclusively soft sand substrate—avoid gravel or any sharp substrate that damages the delicate barbels essential for feeding behaviour. Furnish with smooth driftwood, rounded stones, and live plants creating naturalistic environment whilst ensuring open sand areas remain for foraging. Gentle filtration providing moderate flow suits their preference for calmer waters without strong currents that would stress bottom-dwelling species. Moderate lighting with floating plants or surface cover creates security. Good oxygenation through gentle surface agitation supports their active metabolism—these fish may occasionally dash to surface to gulp atmospheric air as supplementary respiration if oxygen levels decline.
Maintain stable temperatures between 24-27°C. Water should be soft with pH 6.0-7.5 and low to moderate hardness, matching South American river origins. Like all armoured catfish, this species is sensitive to accumulated metabolites and declining water quality. Ammonia and nitrite must remain at zero, whilst nitrates should be kept below 20ppm through regular 25-30% weekly water changes. Good oxygenation supports their active lifestyle. Consistency in parameters prevents stress that compromises immune function—avoid drastic fluctuations even within the tolerable range.
The False Blochi Catfish is an omnivorous bottom feeder and benthic scavenger that naturally consumes micro-invertebrates, insect larvae, and organic detritus. In captivity, provide varied sinking diet: quality sinking pellets or wafers daily, supplemented 3-4 times weekly with frozen or live foods such as bloodworms, daphnia, brine shrimp, and other small meaty offerings. Feed twice daily in moderate amounts, ensuring food reaches the substrate where these dedicated bottom feeders forage. Despite their scavenging reputation, they require proper dedicated feeding—they cannot survive solely on leftover food from other fish. Ensure particle size is appropriate for their mouth dimensions.
False Blochi Catfish are diurnal and display constant activity throughout daylight hours, busily sifting substrate in search for food particles. They are highly social fish forming cohesive groups—maintain them in groups of 6+ individuals where synchronized foraging and social interactions become most apparent. Watch for their characteristic bottom-sifting behaviour as they methodically process substrate. The XL sizing means these specimens display confident behaviour from introduction, settling quickly into new aquariums and establishing normal feeding patterns faster than smaller juveniles. Occasional bursts of energetic activity are normal social behaviours indicating healthy, settled fish.
This peaceful catfish thrives alongside small to medium non-aggressive community fish. Suitable companions include tetras, rasboras, livebearers, and other peaceful Corydoras-type catfish. Avoid large aggressive fish, predatory species, notorious fin-nippers, and very boisterous species that would intimidate or outcompete these bottom feeders during feeding time. Select tankmates that appreciate similar water parameters and won't harass the busy bottom-dwelling catfish.
Captive breeding is possible with appropriate conditioning and spawning triggers. Condition groups with abundant high-quality foods, then trigger spawning with cooler water changes simulating seasonal rainfall patterns. Eggs are typically scattered and attached to glass, plants, or décor. Remove adults after spawning to prevent egg predation, or transfer eggs to separate rearing tank with gentle aeration. Fry initially require microscopic foods before accepting larger offerings as they grow.
Tropical Fish Co supplies healthy, quarantined False Blochi Catfish XL specimens that have been carefully acclimated to UK water conditions and are feeding actively. Each catfish is hand-selected for excellent body condition and intact barbels. The XL sizing provides robust specimens that settle quickly and display confident behaviour from introduction. Our team can advise on group sizes and compatible tankmates. With specialist packaging and next-day UK delivery, your new catfish arrive safely in peak condition.
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