Warrior Catfish - (Hemiarius dioctes)

🐟 Warrior Catfish – (Hemiarius dioctes) – Powerful Brackish & Freshwater Predator Catfish

The Warrior Catfish (Hemiarius dioctes) is a robust, predatory sea catfish species found in rivers, estuaries, and coastal waters across Southeast Asia and northern Australia. Known for its muscular build, sharp dorsal and pectoral spines, and strong predatory instincts, this species thrives in both brackish and freshwater environments. Its silver-gray body and large head give it a commanding presence, while its aggressive feeding behavior makes it a thrilling addition for experienced predatory fish keepers.

In the wild, Warrior Catfish are opportunistic hunters, feeding on fish, crustaceans, and mollusks. They can adapt well to aquarium life if provided with ample space, strong filtration, and a varied meaty diet. Due to their large adult size and territorial nature, they are best kept in predator-only setups or with other large, fast-moving tankmates.

🔎 Quick Facts – Warrior Catfish (Hemiarius dioctes)

• 📛 Common Name: Warrior Catfish
• 🔬 Scientific Name: Hemiarius dioctes
• 🌍 Origin: Southeast Asia, Papua New Guinea, and northern Australia
• 🎨 Appearance: Silver-gray body, large head, wide mouth, long barbels, and strong fin spines
• 📏 Max Size: 24–28 inches (60–70 cm)
• 💎 Availability: Rare in the aquarium trade; prized by monster fish keepers

😇 Behavior & Temperament

• ⚔️ Aggressive predator toward smaller tankmates
• 🐟 Best kept with other large, equally aggressive species
• 🌊 Active swimmer; prefers open space and strong current

🏠 Aquarium & Tank Requirements

• 📦 Minimum Tank Size: 300+ gallons
• 🪵 Provide open swimming space with some hiding structures
• 🌊 Strong filtration and aeration; moderate to strong water flow
• 💡 Low to moderate lighting

💧 Water Parameters – Warrior Catfish Care

• 🌡️ Temperature: 75–82°F (24–28°C)
• ⚗️ pH: 7.0–8.0
• 💧 Hardness: Moderate; tolerates both freshwater and brackish

🍽️ Diet – Carnivorous

• 🐟 Whole fish (fresh or frozen)
• 🦐 Shrimp, prawns, and other seafood
• 🍖 Sinking carnivore pellets and meaty sticks

📋 Warrior Catfish Overview Table

✨ Highlight:
The Warrior Catfish is a large, hard-hitting predator with the strength, speed, and aggression to dominate a big predator tank, making it a standout choice for advanced aquarists.