Clarias catfish, often known as walking catfish due to their ability to move across land for short distances, are hardy fish commonly kept in aquariums or ponds. Here’s a guide to their care:
 
1. Tank Setup
 
    •    Tank Size: At least 75 gallons for a single catfish; larger if keeping multiple individuals. They grow up to 2 feet (60 cm) or more.
    •    Water Parameters:
    •    Temperature: 22–28°C (72–82°F)
    •    pH: 6.5–7.5
    •    Hardness: Soft to moderately hard water (4–15 dGH)
    •    Substrate: Sand or smooth gravel, as they tend to dig and search for food along the bottom.
    •    Decor: Provide hiding spaces with rocks, driftwood, or PVC pipes. Keep decorations sturdy since they can be active and strong.
    •    Filtration: High-quality filtration is essential due to their messy eating habits. Use a strong filter to maintain water quality.
 
2. Diet
 
    •    Type: Omnivorous. They will eat a variety of foods.
    •    High-quality pellets or sinking wafers.
    •    Frozen or live foods such as bloodworms, brine shrimp, or small fish.
    •    Vegetables like zucchini or peas.
    •    Frequency: Feed once or twice daily, but avoid overfeeding.
 
3. Behavior and Compatibility
 
    •    Temperament: Semi-aggressive. They are nocturnal but can be active during the day in captivity.
    •    Tank Mates: Suitable for larger, robust fish like cichlids or other large catfish. Avoid keeping them with small or slow-moving fish, as they might see them as food.
 
4. Health and Maintenance
 
    •    Common Issues: They are hardy but prone to stress-related diseases if water quality is poor.
    •    Maintenance: Regular water changes (25-30% weekly) and cleaning of the substrate.
    •    Observation: Watch for signs of illness such as lethargy, loss of appetite, or skin issues.
 
5. Special Considerations
 
    •    Tank Lid: Ensure a tightly sealed lid, as they are excellent escape artists and can survive out of water for a limited time due to their ability to breathe air.
    •    Lifespan: With proper care, they can live 8–12 years.