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Vieja De Agua - (Rhinelepis aspera)

Vieja De Agua - (Rhinelepis aspera)

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Vieja De Agua - (Rhinelepis aspera)
Fish Details, Description and Information Below:

🐟 Vieja De Agua – (Rhinelepis aspera) – Massive South American Armor-Plated Pleco

The Vieja De Agua (Rhinelepis aspera) is a giant, heavily armored pleco native to the fast-flowing rivers of South America, particularly in Brazil, Paraguay, and Argentina. This species is known for its rugged, bony plates covering its entire body, giving it a prehistoric appearance. Often growing over 24 inches in length, the Vieja De Agua is a powerful algae and detritus grazer, making it a functional yet impressive display fish for extremely large aquariums or tropical ponds. Its name, which translates to “Old Woman of the Water” in Spanish and Portuguese, is a nod to its ancient, weathered look.


🔎 Quick Facts – Vieja De Agua (Rhinelepis aspera)

  • 📛 Common Names: Vieja De Agua, Old Woman of the Water
  • 🔬 Scientific Name: Rhinelepis aspera
  • 🌍 Origin: South America – Brazil, Paraguay, Argentina
  • 🎨 Appearance: Thick, bony armor plating; dark gray to black coloration; broad, flat head
  • 📏 Max Size: 24–28 inches (60–71 cm)
  • 💎 Availability: Rare in the aquarium trade due to size requirements

😇 Behavior & Temperament

  • 🤝 Peaceful toward most tankmates, but may be territorial with other large plecos
  • 🌿 Strong algae and detritus grazer
  • 🌊 Thrives in strong currents similar to natural river habitats

🏠 Aquarium & Tank Requirements

  • 📦 Minimum Tank Size: 300+ gallons (ponds preferred for adults)
  • 🪵 Provide large driftwood, flat rocks, and open swimming space
  • 🌊 Requires strong water movement and excellent filtration
  • 💡 Moderate lighting to encourage algae growth

💧 Water Parameters – Vieja De Agua Care

  • 🌡️ Temperature: 72–82°F (22–28°C)
  • ⚗️ pH: 6.5–7.8
  • 💧 Hardness: Soft to moderately hard water

🍽️ Diet – Herbivorous with Detritus Feeding

  • 🌿 Algae wafers, biofilm, and fresh vegetables (zucchini, cucumber, spinach)
  • 🦐 Occasional protein foods such as shrimp pellets
  • 🪵 Benefits from driftwood for digestive health

📋 Vieja De Agua Overview Table

Feature Details
🌍 Origin Brazil, Paraguay, Argentina
📏 Max Size 24–28 inches
😇 Temperament Peaceful, may be territorial with other large plecos
🏠 Tank Size 300+ gallons or pond
⚗️ pH Range 6.5–7.8
🌡️ Temperature 72–82°F
🍽️ Diet Herbivorous – algae, vegetables, detritus
🎯 Ideal For Massive aquariums or tropical ponds

✨ Highlight:
The Vieja De Agua is a prehistoric-looking armored pleco that can reach over two feet in length, making it a challenging yet awe-inspiring choice for very large aquariums and ponds.

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