Crocodile Catfish
Siluriformes sp.
Crocodile Catfish (Siluriformes sp.) — Easy care, Peaceful, under Catfish & Cory. Minimum tank in the app: 660 US gal min; aim for 64–73°F and pH 6–7.8. The Crocodile Catfish appeals to aquarists seeking a unique, large bottom-dweller that thrives in spacious environments.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Mostly South America / Africa
- South America
- Africa
Regional colours match the stocking calculator’s origin map.
Crocodile Catfish Tank Setup
To accommodate this species, prioritize a vast tank (minimum 2500 liters) with low to moderate flow, ensuring a sandy substrate for comfort. Incorporating caves and driftwood not only provides cover but also enriches the environment, while moderate lighting helps mimic its natural habitat, promoting a sense of security and reducing stress.
What Do Crocodile Catfishs Eat?
Feeding is generally straightforward, as this omnivore will accept a variety of foods, including pellets and meaty offerings. However, ensure food is offered slowly to minimize competition and allow the Crocodile Catfish to feed comfortably.
Crocodile Catfish Tank Mates
Ideal tankmates should be larger, non-aggressive species that occupy different swimming zones, such as larger cichlids or loaches. Be cautious of smaller fish that may be perceived as food or overly aggressive bottom-dwellers, as they can provoke stress or conflict. Since this species does not shoal, keeping it alone is optimal to prevent territorial disputes.
Are Crocodile Catfishs Good for Beginners?
In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. Aquarists often underestimate the space and filtration requirements for the Crocodile Catfish, leading to poor water quality and increased stress. neglecting to provide adequate cover can result in shyness and reluctance to explore.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.




