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Roeboides affinis

Roeboides affinis

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Roeboides affinis
Fish Details, Description and Information Below:

🐟 Roeboides affinis – Silver Sabre Tetra for Sale

The Roeboides affinis is a slender, fast-swimming characin found throughout the Amazon and Orinoco River basins. Recognized for its elongated, laterally compressed body and sharp, reflective silver scales, this species is often called the Silver Sabre Tetra due to its sleek, blade-like profile.

In the wild, they form large shoals in open waters, where their speed and schooling behavior help them avoid predators. Their shimmering silver coloration makes them a striking addition to large, fast-moving community aquariums.


🔎 Quick Facts – Roeboides affinis

  • 📛 Common Name: Silver Sabre Tetra, Slender Tetra
  • 🔬 Scientific Name: Roeboides affinis
  • 🌍 Origin: Amazon and Orinoco River basins – Brazil, Colombia, Peru, Venezuela
  • 🎨 Appearance: Slender, laterally compressed silver body with a sharp profile and faint horizontal line
  • 📏 Max Size: 6–8 inches (15–20 cm)
  • 💎 Rarity: Occasionally available; mostly wild-caught

😇 Behavior & Temperament

  • 🐟 Active, fast-moving shoaler
  • 👫 Best kept in groups of 6+
  • ⚠️ May outcompete slower fish for food
  • 🌊 Requires swimming space and open water

🏠 Aquarium & Tank Requirements

  • 📦 Minimum Tank Size: 75+ gallons for a school
  • 🌿 Open swimming areas with some driftwood and plants at the sides/back
  • 🌊 Moderate current with excellent filtration
  • 💡 Bright to moderate lighting to enhance silver sheen

💧 Water Parameters – Roeboides affinis Care

  • 🌡️ Temperature: 74–82°F (23–28°C)
  • ⚗️ pH: 6.0–7.5
  • 💧 Hardness: Soft to moderately hard

🍽️ Diet – Carnivorous

  • 🦐 Frozen or live foods such as brine shrimp, mysis shrimp, and bloodworms
  • 🪱 Insect larvae, small crustaceans
  • 🌾 May take high-quality flakes and pellets once acclimated

📋 Roeboides affinis Care Overview Table

Feature Details
🌍 Origin Amazon & Orinoco River basins
📏 Max Size 6–8 inches (15–20 cm)
😇 Temperament Active, schooling fish
🏠 Tank Size 75+ gallons
⚗️ pH Range 6.0–7.5
🌡️ Temperature 74–82°F (23–28°C)
🍽️ Diet Carnivorous
🎯 Ideal For Large, active community setups

✨ Highlight:

  • The Roeboides affinis is a sleek, silver schooling characin that adds dynamic movement and metallic shine to large aquariums, thriving best in fast-moving, open-water environments.
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