Tetras — Complete Guide
Small, colorful schooling fish from South America. Tetras are peaceful community fish that thrive in groups of 6+. They are perfect for planted tanks and nano setups.
Species in this group
Our database includes 3 tetras with full care guides, compatibility info, and stocking recommendations.
Quick comparison
| Species | Min tank | Adult size | Temperature | pH | Temperament | Care |
|---|---|---|---|---|---|---|
| Neon Tetra | 10 gal | 1.5" | 72-78°F | 6-7 | Peaceful | Easy |
| Cardinal Tetra | 20 gal | 2" | 73-81°F | 5.5-7 | Peaceful | Moderate |
| Ember Tetra | 10 gal | 0.8" | 73-84°F | 5.5-7 | Peaceful | Easy |
Care tips for Tetras
When keeping tetras, consider these general guidelines:
- Water parameters: Match temperature, pH, and hardness across all species in your tank.
- Group size: Schooling species need groups of 6+ to reduce stress and show natural behavior.
- Diet: Provide a varied diet of quality flakes, pellets, and frozen foods.
- Tank setup: Research each species’ specific needs for decoration, flow, and swimming space.
Frequently asked questions
What are the best Tetras for aquariums?
Popular tetras for home aquariums include Neon Tetra, Cardinal Tetra, Ember Tetra. Each species has unique care requirements — check individual guides for details.
Can different tetras live together?
Most tetras are compatible with each other if water parameters overlap. Use our compatibility checker to compare any two species before adding them together.
What tank size do tetras need?
Tank size depends on the species. Tetras range from 10 to 20 gallons minimum. Always check individual species requirements.