Red Eye Tetra (Moenkhausia sanctaefilomenae) – Tank-Bred

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Overview

The Red Eye Tetra (Moenkhausia sanctaefilomenae) is a classic community fish known for its clean silver body, bold black tail accents, and signature red-ringed eyes that stand out in motion. Tank-bred specimens are especially hardy and adaptable, making them an excellent choice for both newer aquarists and experienced hobbyists alike.

When kept in groups, these tetras create a strong, unified presence in the aquarium. Their steady, confident swimming pattern brings structure and rhythm to open water areas, making them an ideal species for balancing planted layouts.

This is a fish that does not rely on extreme coloration to stand out. Instead, it brings contrast, movement, and consistency to the aquarium as a whole.

What We Love About This Fish

• Signature Red Eye Contrast: A subtle but striking feature that stands out in motion
• Strong Schooling Behavior: Moves as a cohesive group, adding structure to the aquascape
• Hardy and Adaptable: Tank-bred for resilience across a range of conditions
• Classic Community Staple: A reliable, time-tested species for planted aquariums

Quick Care Guide

• Care Level: Easy and well-suited for both beginner and experienced aquarists

• Temperament: Peaceful but active; best kept with similarly sized tank mates

• Diet: Omnivorous; accepts flakes, pellets, and frozen foods

• Max Size: Approximately 2.5 – 3 inches

• Average Purchase Size: 1 – 1.5 inches

• Lifespan: 3 to 5 years with proper care

• Tank Level: Midwater swimmer that utilizes open swimming space

• Activity Level: Moderate to high; active schooling fish

• Group Size: Best kept in groups of 6 or more

• Shrimp Compatibility: May prey on very small shrimp; generally safe with larger shrimp

• Recommended Tank Parameters:
  • Temperature: 72°–80°F (22°–27°C)
  • pH: 6.0–7.5
  • KH: 3–10 dKH
  • Minimum Tank Size: 20 gallons

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