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Freshwater Aquarium
Predator Tank
A large aquarium for keeping big predatory fish - arowanas, oscars, arapaima, freshwater stingrays, and other monsters.
Difficulty: Advanced
Tank Size: 75g+ Recommended: 180g Budget: $800-$5,000
📖 Overview
Predator tanks ("monster tanks") house the largest freshwater fish in the hobby: arowanas, arapaima, redtail catfish, freshwater stingrays, giant gouramis, snakeheads. These are decade-plus commitments in tanks 180+ gallons. Feeding is expensive and messy - live or frozen food, huge water volumes, industrial filtration. Not for beginners. For those who commit, no other aquarium type matches the presence and personality of these fish.
💧 Essential Parameters
Temperature: 78-84 F. Extreme filtration - 10x turnover minimum. Massive water changes (30-50% weekly).
🐟 Stocking Recommendations
Silver arowana, redtail catfish, tiger shovelnose, oscars, freshwater stingrays, arapaima (300+ gal only), pacu, snakeheads.