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FishbeginnerFreshwater

Haraldschultzi Corydoras

Corydoras haraldschultzi

AnimaliaChordataActinopterygii

📍 South America

Ask Finn

A large, reticulated corydoras from the Araguaia River in Brazil, featuring a white body covered with an intricate network of dark brown to black spots and lines that form a maze-like pattern. Often confused with Corydoras sterbai, it prefers cooler water (68–75°F), groups of 6+, and a fine sandy substrate.

Size2.5"
Min Tank15g
School6+
peaceful
Zonebottom

Care Guide

Diet

Haraldschultzi corydoras are bottom feeders that consume 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 vegetable matter occasionally to support digestive health.

Behavior

These peaceful catfish are nocturnal and spend most of their time on the substrate sifting through sand for food and detritus. They are social and should always be kept in groups of 6 or more to reduce stress and encourage natural schooling behavior. They are generally inactive during the day but become more active at dusk and during feeding times.

Breeding

Breeding Haraldschultzi corydoras in captivity is difficult and rarely achieved in home aquariums. 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, making rearing challenging for most hobbyists.

Common Diseases

Ich (Ichthyophthirius multifiliis)

Symptoms

White spots on body and fins, rapid breathing, rubbing against substrate

Treatment

Raise temperature gradually to 79°F, perform daily water changes, use ich medication; maintain excellent water quality

Fin Rot

Symptoms

Frayed or deteriorating fins, discoloration at fin edges, lethargy

Treatment

Improve water quality with frequent changes, reduce stocking density, use antibacterial medication if severe

Barbel Erosion

Symptoms

Deterioration or loss of barbels, difficulty feeding, reduced bottom-sifting behavior

Treatment

Ensure fine sandy substrate (not gravel), maintain pristine water conditions, provide quality sinking foods

Bacterial Infection

Symptoms

Sores on body, cloudy eyes, loss of appetite, unusual behavior

Treatment

Perform large water changes, maintain optimal temperature and pH, use broad-spectrum antibacterial treatment if needed

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Water it likes

ph
6.0–7.5
ammonia
0 ppm
nitrate
<20 ppm
temperature
72–79°F (22–26°C)

Stats

Community tips0
Kept by0 hobbyists