Discover the fascinating world of Pictus catfish, a bottom-feeder that picks on smaller fish in the aquatic realm. Learn about their unique appearance and behavior, as well as how to create an ideal environment for these active swimmers.
If you’re looking for an energetic, sleek freshwater fish to liven up your aquarium, the pictus catfish might be your perfect match. Known for their graceful movements and distinctive black spots, Pimelodus pictus are a favorite among aquarists for both their beauty and active behavior.
The Pictus catfish (Anacanthus pictus) is a species of armored catfish native to South America.
It is known for its distinctive pattern and ability to thrive in well-oxygenated waters.
In the aquarium trade, it is popular due to its unique appearance and relatively small size, reaching up to 6 inches in length.
The Pictus catfish is a nocturnal species that requires a varied diet and suitable tank conditions to survive.
Origin and Habitat
The pictus catfish is native to South America, specifically the Orinoco and Amazon River basins. In the wild, these peaceful fish inhabit fast-flowing waters rich in decaying organic matter, organic debris, and shelter from plants, driftwood, and rocky crevices.
Appearance
Pictus catfish have a distinctive appearance that sets them apart from many other fish. Their silvery body is adorned with scattered black spots, and they typically grow up to 5 inches (13 cm) in size. One of their most notable features is the presence of sharp spines on their dorsal and pectoral fins, which are mildly venomous for defense purposes.
Tank Setup and Compatibility
Pictus catfish are active swimmers that thrive in community tanks with proper planning. A minimum tank size of 55 gallons (208 L) is recommended, ideally larger, and they prefer dim lighting due to their nocturnal nature. Decorations such as plants, wood, and smooth rocks can help mimic their natural environment. However, it’s essential to avoid very small fish that might be mistaken for food, and they get along well with similarly sized fish.
Feeding and Diet
Pictus catfish are omnivores and not picky eaters. In the wild, they feed on decaying plant matter, small fish, and invertebrates. In captivity, provide them with high-quality pellets, frozen foods like bloodworms, and occasional veggies. Feeding in the evening suits their nocturnal habits, and regular mealtimes help manage quality and consistency.

Breeding in Captivity
Breeding pictus catfish in home aquariums is extremely rare due to the complexity of successful reproduction requiring more research and experimentation with water conditions, tank setup, and diet.
Compatibility and Caution
When choosing tank mates, consider other catfish species like Corydoras, as pictus catfish are too small to compete. Larger, peaceful species can be a good match. Avoid aggressive or territorial fish and those that prefer slow, calm environments.
Final Tips for Pet Parents
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Use a lid: These active swimmers are known jumpers.
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Avoid rough gravel: Their barbels are sensitive.
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Maintain good filtration: They thrive in clean, oxygen-rich water.
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Handle with care: Those sharp spines can injure humans and damage nets.
Pictus catfish are sensitive to water quality and require gentle handling.
When removing from the tank, support their body and avoid sudden movements.
Use a soft-mesh net to prevent damage to their fins.
Avoid touching their eyes or gills.
After handling, place them in a separate container filled with tank water to acclimate before returning to the main aquarium.
Regularly monitoring water parameters is crucial for maintaining the health of pictus catfish.
- howstuffworks.com | Pictus Catfish: Bottom feeders That Pick on Smaller Fish