Red Eye Tetra
Characidae sp.
Red Eye Tetra (Characidae sp.) — Easy care, Peaceful, under Tetra & Characin. Minimum tank in the app: 28 US gal min; aim for 72–79°F and pH 5.5–7.5. Red Eye Tetras are ideal for both beginner and intermediate aquarists due to their easy care requirements and stunning appearance.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Mostly South America
- South America
Regional colours match the stocking calculator’s origin map.
Red Eye Tetra Tank Setup
Create a dynamic environment with ample mid-water space complemented by plants and decorations for cover. A balanced flow is beneficial, as it mimics their natural habitat; however, ensure there are calm areas for resting. Soft, dark substrates can enhance their coloration, while moderate lighting encourages healthy growth of plants that provide shelter.
What Do Red Eye Tetras Eat?
Red Eye Tetras are omnivores that prefer small, varied foods. They feed quickly, so it’s important to distribute food evenly across the tank to minimize competition and ensure all fish are adequately nourished.
Red Eye Tetra Tank Mates
Ideal tank mates include other peaceful species of similar size, such as small rasboras or other tetras. Avoid aggressive or larger fish that could intimidate them. Intraspecies, they thrive in groups of at least six, and overcrowding beyond their comfort level can lead to stress and aggression.
Are Red Eye Tetras Good for Beginners?
In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. Aquarists often underestimate the necessity of keeping them in groups, leading to shy behavior and reduced activity. neglecting water parameters can cause stress, as they thrive in slightly acidic to neutral pH levels.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.




