Blue Whale Catfish
Siluriformes sp.
Blue Whale Catfish (Siluriformes sp.) — Easy care, Peaceful, under Catfish & Cory. Minimum tank in the app: 70 US gal min; aim for 72–79°F and pH 6–7.8. The Blue Whale Catfish is ideal for aquarists seeking a distinctive bottom-dweller with a gentle temperament, perfect for larger systems.

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.
Blue Whale Catfish Tank Setup
To accommodate the Blue Whale Catfish, prioritize a spacious tank with a minimum of 265 liters, ensuring good filtration to manage its bioload. Utilize a soft substrate to protect its sensitive barbels, incorporate caves and driftwood for cover, and maintain subdued lighting to create a comfortable environment.
What Do Blue Whale Catfishs Eat?
As an omnivorous bottom feeder, the Blue Whale Catfish tends to be slow and methodical during feeding. This can lead to competition issues with faster, more assertive tank mates, so providing a varied diet with sinking pellets and occasional fresh food is essential to ensure its health and vibrancy.
Blue Whale Catfish Tank Mates
Ideal companions include similarly sized, non-aggressive species that occupy different tank zones, such as larger tetras or peaceful cichlids. Avoid small, fast-moving fish that may compete for food or trigger stress, and ensure that tank mates are not overly territorial, as this can disrupt the catfish’s calm demeanor.
Are Blue Whale 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 requirements and filtration needs of the Blue Whale Catfish, leading to poor water quality and stunted growth. failing to provide adequate hiding spots can result in stress and reduced activity levels, impacting overall health and well-being.
Building a community? Run the full list through the stocking calculator before you add anything else.
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