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Macropterus Corydoras
Corydoras macropterus
Animalia›Chordata›Actinopterygii
📍 South America
A large-finned corydoras from southeastern Brazil notable for its proportionally elongated dorsal and pectoral fins compared to most corydoras species. It is a peaceful bottom-dweller that does best in groups of 6+ in well-oxygenated water, preferring slightly cooler temperatures (68–75°F) and a soft sandy substrate.
Care Guide
Diet
Macropterus corydoras are omnivorous bottom-feeders that thrive on sinking pellets, algae wafers, and frozen foods like bloodworms and brine shrimp. Feed small amounts once daily, ensuring food reaches the substrate where they forage. Supplement with blanched vegetables occasionally to support digestive health.
Behavior
These peaceful catfish are active bottom-dwellers that spend most of their time foraging through substrate and exploring decorations. They are highly social and exhibit reduced stress and better coloration when kept in groups of 6 or more. They are nocturnal to crepuscular, showing peak activity during dawn and dusk hours.
Breeding
Breeding Macropterus corydoras in captivity is difficult and rarely achieved in home aquaria. Successful breeding requires pristine water conditions, cooler temperatures (68–72°F), and a well-established group with proper conditioning. Fry are extremely small and require infusoria or liquid fry food for initial nutrition.
Tank Mates
Similar peaceful temperament and bottom-dwelling habits; compatible water parameters
Small, peaceful mid-water swimmers that won't compete for bottom space
Peaceful schooling fish with identical water temperature preferences (68–75°F)
Peaceful and compatible; prefers slightly warmer water but tolerates cooler ranges
Peaceful invertebrates that share bottom-dwelling habits without competing for food
Nocturnal algae-eater with similar peaceful temperament; minimal territorial conflict
Common Diseases
Ich (Ichthyophthirius multifiliis)
White spots on body and fins, rapid breathing, lethargy, rubbing against objects
Raise temperature gradually to 79–80°F, perform daily 25% water changes, use aquarium salt (1 tsp per 5 gallons) or ich medication; treat for 10–14 days
Fin Rot
Frayed or deteriorating fins, discoloration at fin edges, lethargy
Improve water quality with frequent water changes, maintain optimal temperature, use antibiotic medication if severe; remove decaying food and debris
Barbel Erosion
Shortened or missing barbels, difficulty foraging, behavioral changes
Ensure substrate is soft sand (not sharp gravel), maintain excellent water quality, provide varied diet rich in vitamins; condition is often irreversible but can be prevented
Bacterial Infection
Open sores, cloudy eyes, loss of appetite, color fading
Perform 50% water change immediately, maintain pristine water conditions, use broad-spectrum antibiotic medication; isolate if possible to prevent spread
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Water it likes
- ph
- 6.0–7.5
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- temperature
- 68–77°F (20–25°C)