Compatibility Overview
Ember Tetra and Molly can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Ember Tetra | Molly | Verdict |
|---|---|---|---|
| Temperature | 73–84°F | 72–82°F | ✅ 73–82°F |
| pH Range | 5.5–7.0 | 7.5–8.5 | ❌ No overlap |
| Temperament | peaceful | peaceful | ✅ Compatible |
| Adult Size | 0.8 in | 4 in | ❌ 5× difference |
| Min. Group | 8+ | 3+ | See below |
| Min. Tank Size | 75 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
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.
Molly — Poecilia sphenops
Hardy livebearers that prefer alkaline, hard water — sometimes slightly brackish. Prolific breeders; peaceful community fish.
Frequently Asked Questions
Can Ember Tetra live with Molly?
With significant caution and a larger tank. Ember Tetra and Molly can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Ember Tetra and Molly together?
A minimum of 75 gallons is recommended for keeping Ember Tetra and Molly together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Ember Tetra and Molly?
73–82°F
Is a Ember Tetra aggressive toward a Molly?
Ember Tetra is peaceful and Molly is peaceful. pH ranges barely or do not overlap: Ember Tetra prefers 5.5–7.0; Molly prefers 7.5–8.5.