Overview
The Red Eye Tetra is a popular freshwater fish known for its vibrant red eyes and sleek, silver body. They are generally peaceful and can be kept in a community tank with other non-aggressive species. Their moderate activity level makes them suitable for a variety of aquarium setups. With proper care, they can live up to 5 years.
Scientific Classification
| Rank | Classification |
|---|---|
| Family | Characidae |
| Genus | Moenkhausia |
| Species | Moenkhausia sanctaefilomenae |
| Water type | freshwater |
Natural Habitat
Native to the Amazon River basin in South America, the Red Eye Tetra thrives in slow-moving, clear waters with dense vegetation.
Appearance
The Red Eye Tetra has a slender body with a deep red patch behind the eyes and a silvery sheen along its sides.
Behavior
These tetras are not known to school in the wild but can be seen in groups in the aquarium. They are generally peaceful and can be kept with other small, peaceful fish.
| Trait | Value |
|---|---|
| Temperament | peaceful community fish |
| Schooling | No |
| Activity level | moderate |
Water Requirements
| Parameter | Ideal Range | Notes |
|---|---|---|
| Temperature | 22–26°C (72–79°F) | Use a reliable adjustable heater |
| pH | 6–7 | Avoid sudden swings |
| Hardness (GH) | 5-15 dGH dGH | Soft to moderately hard |
| Ammonia | 0 ppm | Any detectable ammonia signals a problem |
| Nitrite | 0 ppm | Toxic even at low levels |
| Nitrate | <20 ppm | Manage through regular partial water changes |
| Min. tank | 20L (5 gal) | Larger tanks are easier to keep stable |
Interesting Facts
- They are known for their striking red eyes.
- They are a popular choice for beginners due to their hardiness and peaceful nature.
- They are often found in the aquarium trade as juveniles, which can be difficult to sex, but they develop distinct coloration as adults.
📋 Full Care Guide
Ready to set up a tank for your Red Eye Tetra? The complete care guide covers tank setup, feeding schedule, common diseases, tank mates, and breeding.
Read Red Eye Tetra Care Guide →Related Species
Related Species & Guides
This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.