Gulper Catfish

GULPER CATFISH

Asterophysus batrachus

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📍 BASIC INFO

Origin: South America – Amazon & Orinoco Basins

Adult Size: 8″ – 10″+

Temperament: Predatory / Aggressive

Care Level: ⭐ Advanced

Tank Level: Bottom – Mid

🍽 DIET

Carnivore

Accepts: Live fish, frozen fish, shrimp, and other meaty foods

✔ COMPATIBILITY

Best kept alone or with very large tankmates. Will swallow fish nearly its own size due to its extremely large mouth. Not suitable for community aquariums.

💧 WATER PARAMETERS

pH: 6.0 – 7.5

Temperature: 74–82°F

Ammonia: 0 ppm

Nitrite: 0 ppm

Nitrate: <40 ppm

⭐ HIGHLIGHT

Unique ambush predator known for its enormous expandable mouth capable of swallowing large prey.

📝 CARE NOTES

A specialized predatory catfish that requires experienced care. Provide dim lighting, hiding areas, and strong filtration. Feed appropriately sized prey items and avoid mixing with smaller fish. Slow-moving but extremely powerful feeder.

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Fish World Aquarium