Pictus catfish (Pimelodus pictus) are fast, active predators that usually reach about 12 cm (5 inches). They can suit a spacious community of appropriately sized fish, but small tetras, guppies and shrimp may become food. They are not a safe cleanup addition to every aquarium.
Space for swimming and a group
Plan around a group of six when you can provide a sufficiently large system. A single fish may survive alone, but a group is generally more outgoing. Do not choose the fish first and then attempt to fit a group into a cramped tank.
Seriously Fish recommends at least 120 × 45 × 45 cm because of their activity. Treat that as a starting reference, with more swimming room for a group and companions. Gallons added per extra fish do not reliably describe the space available.
Set up a clean, sheltered aquarium
Use fine sand or smooth substrate, secure wood and rocks, and enough shelters for fish to retreat without blocking the open swimming area. Subdued lighting and shaded cover help them settle. Protect filter openings and cover the aquarium.
A practical reference is about 23–25°C (73–77°F), mildly acidic to neutral water and moderate hardness. Ask about the supplier’s conditions and acclimate carefully rather than making abrupt adjustments. Aquarium Industries emphasizes their sensitivity to poor water quality.
Use a fully cycled filter, provide oxygenation and keep ammonia and nitrite at zero. Remove waste regularly. Damaged barbels, rapid breathing or reduced appetite warrant checking the environment promptly.
Food and compatible companions
Feed suitable sinking carnivore foods and varied aquatic foods such as appropriately sized frozen invertebrates. They can gorge themselves, so adjust portions to body condition and remove leftovers. A pile of food on the bottom is not evidence that the fish needs more.
Algae, plant leaves and other fish’s scraps are not a complete feeding plan. Live feeder fish are unnecessary and can introduce disease.
Choose robust, peaceful companions too large to swallow, with matching temperatures and chemistry. Avoid tiny fish and slow feeders that may be overwhelmed by the catfish at night. An armored or aggressive companion is not automatically suitable either.
Our pictus catfish companion guide considers possible combinations. Check adult sizes and feeding competition for the actual fish involved rather than relying on a broad label such as “tetra” or “catfish.”
Handling and health
Rigid fin spines can snag mesh and cause painful punctures. Transfer fish using an appropriate container when practical, without grabbing them or pulling at an entangled net. Avoid crowding the long barbels during transport.
Quarantine new arrivals and observe their feeding. Ich is a parasitic disease, not a fungus; white spots require an appropriate diagnosis and treatment. Read medication directions for catfish and obtain qualified advice when needed rather than assuming every treatment should be halved. Routine home breeding is not established, so a rounded abdomen should not be treated as proof of imminent spawning.
