Black Phantom Tetra and Firefish Goby Compatibility Overview
Black Phantom Tetra and Firefish Goby are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Black Phantom Tetra wants 5.0โ7.0 and Firefish Goby wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Black Phantom Tetra | Firefish Goby | Verdict |
|---|---|---|---|
| Temperature | 68โ82ยฐF | 72โ82ยฐF | โ 72โ82ยฐF |
| pH Range | 5.0โ7.0 | 8.1โ8.4 | โ No overlap |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 1.4 in | 3.0 in | โ ๏ธ 2.1ร difference |
| Min. Group | 8+ | 1+ | See below |
| Min. Tank Size | 20 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Black Phantom Tetra โ Hyphessobrycon megalopterus
The Black Phantom Tetra is a popular freshwater fish known for its striking black and silver coloration. It is generally peaceful and can be kept in a community tank with other non-aggressive species. They require a well-maintained tank with a moderate water flow and a good cover of plants.
โ Full Black Phantom Tetra care guide
Firefish Goby โ Nemateleotris magnifica
The Firefish Goby is a popular choice for saltwater aquariums due to its vibrant colors and peaceful nature. These goby fish thrive in well-maintained tanks with plenty of live rock for them to explore. They are best kept in pairs or small groups and can be a great addition to a community tank with compatible species.
Frequently Asked Questions
Can Black Phantom Tetra live with Firefish Goby?
Generally not recommended. Black Phantom Tetra and Firefish Goby are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Black Phantom Tetra wants 5.0โ7.0 and Firefish Goby wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Black Phantom Tetra and Firefish Goby together?
A minimum of 20 gallons is recommended for keeping Black Phantom Tetra and Firefish Goby together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Black Phantom Tetra and Firefish Goby?
72โ82ยฐF โ inside Black Phantom Tetra's 68โ82ยฐF and Firefish Goby's 72โ82ยฐF.
Is a Black Phantom Tetra aggressive toward a Firefish Goby?
Black Phantom Tetra is peaceful and Firefish Goby is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Black Phantom Tetra and Firefish Goby
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 20 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 29 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 55 gal | Best when keeping larger schools or reducing territorial pressure. |