Compatibility Overview
Angelfish 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 | Angelfish | Molly | Verdict |
|---|---|---|---|
| Temperature | 74–84°F | 72–82°F | ✅ 74–82°F |
| pH Range | 6.0–7.5 | 7.5–8.5 | ⚠️ 7.5–7.5 (narrow) |
| Temperament | semi | peaceful | ⚠️ Monitor |
| Adult Size | 6 in | 4 in | ✅ Similar |
| Min. Group | 1+ | 3+ | See below |
| Min. Tank Size | 75 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Angelfish — Pterophyllum scalare
Elegant South American cichlids with long flowing fins. Generally peaceful but territorial when breeding and will eat very small fish.
Molly — Poecilia sphenops
Hardy livebearers that prefer alkaline, hard water — sometimes slightly brackish. Prolific breeders; peaceful community fish.
Frequently Asked Questions
Can Angelfish live with Molly?
With significant caution and a larger tank. Angelfish 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 Angelfish and Molly together?
A minimum of 75 gallons is recommended for keeping Angelfish and Molly together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Angelfish and Molly?
74–82°F
Is a Angelfish aggressive toward a Molly?
Angelfish is semi and Molly is peaceful. pH ranges barely or do not overlap: Angelfish prefers 6.0–7.5; Molly prefers 7.5–8.5.