Garnet Tetra
Characidae sp.
Garnet Tetra (Characidae sp.) — Easy care, Peaceful, under Tetra & Characin. Minimum tank in the app: 19.8 US gal min; aim for 73–82°F and pH 5.5–7.5. Garnet Tetras are ideal for aquarists seeking a vibrant, active species that thrives in groups.

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.
Garnet Tetra Tank Setup
Create a balanced environment with open swimming areas complemented by plenty of plants and subtle decorations that provide cover without obstructing swimming space. A soft substrate and moderate lighting will enhance their colors and promote natural behavior, while ensuring adequate water flow mimics their South American origins.
What Do Garnet Tetras Eat?
Garnet Tetras prefer small micro foods and can exhibit rapid feeding behaviors, which may lead to competition if not provided in sufficient quantities. Ensure a varied diet to promote optimal health and vibrant coloration, as they benefit from both flake and live foods.
Garnet Tetra Tank Mates
Best housed with similarly sized, non-aggressive species that occupy mid-water zones. Larger or overly active fish may intimidate them, while very small tank mates could risk being outcompeted for food. Maintain a minimum group of six to prevent stress and ensure social harmony.
Are Garnet 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. Many aquarists underestimate the importance of group size, leading to solitary or pairs that experience stress and reduced vitality. neglecting water parameters can result in health issues; maintaining stable pH and temperature is crucial for their well-being.
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.




