Molly and Senegal Bichir Compatibility Overview
Molly and Senegal Bichir are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their usable pH overlap is narrow and requires stable, tested water. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Molly | Senegal Bichir | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 75โ82ยฐF | โ 75โ82ยฐF |
| pH Range | 7.5โ8.5 | 6.2โ7.8 | โ ๏ธ 7.5โ7.8 (narrow) |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 4 in | 19.7 in | โ 5ร difference |
| Min. Group | 3+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Molly โ Poecilia sphenops
Hardy livebearers that prefer alkaline, hard water โ sometimes slightly brackish. Prolific breeders; peaceful community fish.
Senegal Bichir โ Polypterus senegalus
The Senegal Bichir is a fascinating freshwater fish known for its eel-like body and bony plates. It is a peaceful community fish that can be kept with a variety of species. These fish are active and require a spacious tank with plenty of swimming room. They are not known to be aggressive and can be a great addition to a beginner's aquarium.
Frequently Asked Questions
Can Molly live with Senegal Bichir?
Generally not recommended. Molly and Senegal Bichir are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their usable pH overlap is narrow and requires stable, tested water. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Molly and Senegal Bichir together?
A minimum of 100 gallons is recommended for keeping Molly and Senegal Bichir together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Molly and Senegal Bichir?
75โ82ยฐF โ inside Molly's 72โ82ยฐF and Senegal Bichir's 75โ82ยฐF.
Is a Molly aggressive toward a Senegal Bichir?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Molly and Senegal Bichir
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 143 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 220 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 300 gal | Best when keeping larger schools or reducing territorial pressure. |