Description
Red Tail Catfish (Phractocephalus hemioliopterus)
📌 Basic Info
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Scientific Name: Phractocephalus hemioliopterus
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Common Name: Red Tail Catfish / RTC
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Size: Up to 4–5 feet (120–150 cm) in the wild, 3–4 feet in aquariums
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Lifespan: 15 – 20 years
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Tank Zone: Bottom (sometimes mid when active)
🌊 Water Parameters
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TDS (Total Dissolved Solids): 150 – 300 ppm
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pH: 6.0 – 7.5
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Temperature: 22°C – 28°C (72°F – 82°F)
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Water Type: Freshwater, soft to moderately hard
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Hardness: GH 4 – 12, KH 2 – 6
🐟 Characteristics
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Recognized by its black body, white underside, and bright red/orange tail.
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Very fast-growing → requires a huge tank or pond.
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Powerful predator – will eat anything that fits in its mouth.
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Hardy but needs strong filtration due to heavy waste production.
🍽️ Food
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Type: Carnivorous
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Diet: Fish fillets, shrimp, prawns, earthworms, sinking carnivore pellets, mussels.
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Feeding Frequency: Juveniles daily; adults 3–4 times per week.
🛠️ Maintenance
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Tank Size: Minimum 1,000 gallons (pond-size tank for adults).
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Weekly water change: 20–30%.
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Strong external or sump filtration → produces a lot of waste.
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Sand or smooth substrate, large hiding areas with driftwood or rocks.
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Very secure lid – strong and fast swimmer.
👥 Social Behavior
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Minimum Group Size: Best kept singly (very territorial with other RTCs).
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Tank Mates: Only other giant fish (arowana, pacu, giant gourami, pangasius, big catfish).
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Avoid: Small or medium fish, shrimp, or invertebrates – will be eaten.
✅ Do’s
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Keep in a very large tank or pond.
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Provide powerful filtration and aeration.
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Feed high-protein, varied diet.
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Handle with care – strong jaws and spines.
❌ Don’ts
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Don’t keep with small/medium tank mates.
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Don’t keep in small aquariums (they outgrow tanks very fast).
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Don’t overfeed fatty foods like beef heart or chicken.
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Don’t house multiple RTCs in one tank.
⭐ Quick Tips
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Popular monster fish for advanced aquarists.
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Not suitable for beginners due to size and feeding needs.
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Beautiful but requires a huge long-term commitment