Corydoras schultzei
is a species of peaceful, social catfish commonly kept in aquariums. The most popular variant is the deep black, line-bred "Black Venezuela" Cory, though its name is a misnomer as the fish is indigenous to Peru and Colombia, not Venezuela.
Key Characteristics
- Size: They typically grow to about 2 to 3 inches (5 to 7.5 cm) in length.
- Coloration: While the natural form has a "gold flash" or gold stripe along its shoulder, the widely available aquarium variant is a striking, uniform black or dark maroon.
- Behavior: They are very peaceful, active, and social fish. They are bottom-dwellers and thrive when kept in groups of at least five or more individuals.
- Diet: As omnivores and scavengers, they readily accept high-quality sinking pellets, flakes, and frozen or live foods like bloodworms and brine shrimp. It is important to ensure they are specifically fed, not just relying on leftover food.
Aquarium Care
- Tank Size: A minimum of 20 gallons is recommended for a small group.
- Substrate: A fine sand or very smooth gravel substrate is essential to protect their delicate barbels, which can be damaged by rough edges.
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Water Parameters: They are adaptable to a range of tropical freshwater conditions.
- Temperature: 72–78°F (22–26°C).
- pH: 6.0–7.5.
- Hardness: 2–12 dGH, preferring softer water conditions.
- Habitat: They appreciate a well-planted aquarium with plenty of hiding spots and shaded areas created by driftwood, rocks, and plants.
- Compatibility: They are excellent community fish and can be housed with other peaceful species such as tetras, rasboras, and dwarf cichlids. Avoid large, aggressive tankmates.
The "Black Venezuela" variant was developed by German aquarists in the 1990s through selective breeding. They are a hardy and popular choice for both beginner and experienced aquarists looking for an active, bottom-dwelling fish.
