Black Neon Tetra and Molly Compatibility Overview
Black Neon Tetra and Molly can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Black Neon Tetra | Molly | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 72โ82ยฐF | โ 72โ82ยฐF |
| pH Range | 5.0โ7.5 | 7.5โ8.5 | โ ๏ธ 7.5โ7.5 (narrow) |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 1.4 in | 4 in | โ ๏ธ 2.9ร difference |
| Min. Group | 8+ | 3+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Black Neon Tetra โ Hyphessobrycon herbertaxelrodi
The Black Neon Tetra is a popular freshwater species known for its vibrant colors and peaceful temperament. It is an excellent addition to community tanks, thriving in groups of 6 or more. These tetras require a well-maintained aquarium with a flowing current and plenty of swimming space. With proper care, they can live up to 5 years.
โ Full Black Neon Tetra care guide
Molly โ Poecilia sphenops
Hardy livebearers that prefer alkaline, hard water โ sometimes slightly brackish. Prolific breeders; peaceful community fish.
Frequently Asked Questions
Can Black Neon Tetra live with Molly?
With significant caution and a larger tank. Black Neon Tetra and Molly can potentially coexist, but the combination requires careful attention. Their usable pH overlap is narrow and requires stable, tested water. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Black Neon Tetra and Molly together?
A minimum of 75 gallons is recommended for keeping Black Neon Tetra and Molly together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Neon Tetra and Molly?
72โ82ยฐF โ inside Black Neon Tetra's 68โ82ยฐF and Molly's 72โ82ยฐF.
Is a Black Neon Tetra aggressive toward a Molly?
Black Neon Tetra is peaceful and Molly is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Black Neon Tetra and Molly
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 75 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 125 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 150 gal | Best when keeping larger schools or reducing territorial pressure. |