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Rainbow Wolf Fish - (Erythrinus erythrinus)

Rainbow Wolf Fish - (Erythrinus erythrinus)

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Rainbow Wolf Fish - (Erythrinus erythrinus)
Fish Details, Description and Information Below:

🐟 Rainbow Wolf Fish – (Erythrinus erythrinus) – Colorful Predatory Fish for Sale

The Rainbow Wolf Fish (Erythrinus erythrinus) is a striking predatory species native to South America, found in slow-moving rivers, flooded forests, and swamps. It is known for its elongated, torpedo-shaped body and brilliant coloration, which can include shades of gold, red, green, and iridescent blue, often accented with dark vertical bars.

This fish is an ambush predator with lightning-fast strikes, making it a fascinating display for experienced aquarists who appreciate its raw power and vivid beauty. While aggressive toward smaller fish, it can sometimes coexist with similarly sized, robust tankmates in spacious aquariums.


🔎 Quick Facts – Rainbow Wolf Fish (Erythrinus erythrinus)

  • 📛 Common Names: Rainbow Wolf Fish, Red Wolf Fish
  • 🔬 Scientific Name: Erythrinus erythrinus
  • 🌍 Origin: South America (Amazon Basin and surrounding regions)
  • 🎨 Appearance: Elongated body with metallic gold to reddish tones, green and blue iridescence, and dark vertical bars
  • 📏 Max Size: 8–10 inches (20–25 cm)
  • 💎 Availability: Occasionally available; mostly wild-caught

😇 Behavior & Temperament

  • ⚠️ Aggressive predator – will eat smaller fish
  • 🐟 Best kept alone or with equally large, fast, and hardy tankmates
  • 🪵 Ambush hunter; prefers areas with cover
  • 🧠 Intelligent and responsive to keepers

🏠 Aquarium & Tank Requirements

  • 📦 Minimum Tank Size: 55+ gallons
  • 🌿 Provide driftwood, rocks, and dense planting for ambush spots
  • 🪵 Fine gravel or sand substrate
  • 💡 Moderate lighting
  • 🌊 Gentle to moderate water flow

💧 Water Parameters – Rainbow Wolf Fish Care

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

🍽️ Diet – Carnivorous Predator

  • 🐟 Whole fish (frozen or fresh)
  • 🦐 Shrimp, prawns, and other meaty foods
  • 🪱 Earthworms and insect larvae
  • ⚠️ Avoid feeder fish unless quarantined to prevent disease

📋 Rainbow Wolf Fish Care Overview Table

Feature Details
🌍 Origin South America
📏 Max Size 8–10 inches (20–25 cm)
😇 Temperament Aggressive predator
🏠 Tank Size 55+ gallons
⚗️ pH Range 6.0–7.5
🌡️ Temperature 75–82°F (24–28°C)
🍽️ Diet Carnivorous
🎯 Ideal For Experienced predatory fish keepers

✨ Highlight:

  • The Rainbow Wolf Fish is a vividly colored, powerful ambush predator that combines beauty and ferocity, making it a stunning centerpiece for large predatory fish setups.
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