Compatibility Overview
Betta Fish and Ember Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Betta Fish | Ember Tetra | Verdict |
|---|---|---|---|
| Temperature | 76–82°F | 73–84°F | ✅ 76–82°F |
| pH Range | 6.5–7.5 | 5.5–7.0 | ⚠️ 6.5–7.0 (narrow) |
| Temperament | aggressive | peaceful | ❌ Risk |
| Adult Size | 3 in | 0.8 in | ⚠️ 3.8× difference |
| Min. Group | 1+ | 8+ | See below |
| Min. Tank Size | 55 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Betta Fish — Betta splendens
Vibrant labyrinth fish from Southeast Asia. Males are highly territorial toward other bettas and fin-nippers; compatible with many peaceful species in large, planted tanks.
Ember Tetra — Hyphessobrycon amandae
Tiny orange-red schooling tetra that is among the most adaptable nano fish. Peaceful with everything too small to eat them.
Frequently Asked Questions
Can Betta Fish live with Ember Tetra?
Yes, in a well-planned setup. Betta Fish and Ember Tetra can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Betta Fish and Ember Tetra together?
A minimum of 55 gallons is recommended for keeping Betta Fish and Ember Tetra together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Betta Fish and Ember Tetra?
76–82°F
Is a Betta Fish aggressive toward a Ember Tetra?
Betta Fish is aggressive and Ember Tetra is peaceful. Limited pH overlap (6.5–7.0) — maintain pH carefully within this narrow window.