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Wolf Fish - (Hoplias aimara)
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Wolf Fish - (Hoplias aimara)

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Wolf Fish - (Hoplias aimara)
Fish Details, Description and Information Below:

🐟 Wolf Fish - (Hoplias aimara) – Massive South American Predatory Fish

The Wolf Fish (Hoplias aimara), also known as the Aimara or Giant Wolf Fish, is one of the largest and most formidable freshwater predators in South America. Native to the fast-flowing rivers and deep pools of the Amazon and Orinoco basins, this fish is renowned for its raw power, massive head, and impressive set of razor-sharp teeth.

Reaching lengths of over 3 feet in the wild, the Aimara is an apex predator capable of taking down large prey, including fish, crustaceans, and even small mammals in its natural habitat. In captivity, it demands a large, secure aquarium and is best suited for highly experienced fish keepers.


🔎 Quick Facts – Wolf Fish (Aimara)

  • 📛 Common Name: Wolf Fish, Aimara, Giant Wolf Fish
  • 🔬 Scientific Name: Hoplias aimara
  • 🌍 Origin: Amazon & Orinoco River Basins (South America)
  • 🎨 Appearance: Massive head, elongated body, large teeth, mottled brown/gold pattern
  • 📏 Max Size: 28–40 inches (71–102 cm)
  • 💎 Availability: Rare; prized by monster fish keepers

😇 Behavior & Temperament

  • ⚔️ Extremely aggressive and territorial
  • 🐟 Solitary predator – not suitable for tankmates
  • 🌙 More active at dusk and night

🏠 Aquarium & Tank Requirements

  • 📦 Minimum Tank Size: 300+ gallons
  • 🪵 Strong hiding structures and dim lighting
  • 🌊 Powerful filtration to handle heavy bioload
  • 🔒 Secure, heavy tank lid to prevent jumping

💧 Water Parameters

  • 🌡️ Temperature: 75–82°F (24–28°C)
  • ⚗️ pH: 6.0–7.5
  • 💧 Hardness: Soft to moderately hard

🍽️ Diet – Carnivorous

  • 🐟 Whole fish (frozen or fresh)
  • 🦐 Shrimp, prawns, mussels
  • 🪱 Earthworms and other meaty foods
  • 🚫 Avoid feeding live feeder fish to prevent disease introduction

📋 Overview Table

Feature Details
🌍 Origin Amazon & Orinoco River Basins, South America
📏 Max Size 28–40 inches
😇 Temperament Extremely aggressive predator
🏠 Tank Size 300+ gallons
⚗️ pH Range 6.0–7.5
🌡️ Temperature 75–82°F
🍽️ Diet Carnivorous – fish, shrimp, meaty foods
🎯 Ideal For Expert monster fish keepers & public aquariums

✨ Highlight:
The Wolf Fish (Hoplias aimara) is one of the most powerful and aggressive freshwater predators on Earth, prized by experienced aquarists for its size, strength, and fearsome appearance.

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