Firefish Goby and Goldfish Compatibility Overview
Firefish Goby and Goldfish 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. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Firefish Goby | Goldfish | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 50โ74ยฐF | โ ๏ธ 72โ74ยฐF (narrow) |
| pH Range | 8.1โ8.4 | 6.5โ8.0 | โ No overlap |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 3.0 in | 12 in | โ 4ร difference |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
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.
โ Full Firefish Goby care guide
Goldfish โ Carassius auratus
Classic pond and aquarium fish that prefer cool water. Heavy waste producers that require robust filtration. Will eat small fish and shrimp.
Frequently Asked Questions
Can Firefish Goby live with Goldfish?
Generally not recommended. Firefish Goby and Goldfish 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. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Firefish Goby and Goldfish together?
A minimum of 100 gallons is recommended for keeping Firefish Goby and Goldfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Firefish Goby and Goldfish?
72โ74ยฐF (narrow) โ inside Firefish Goby's 72โ82ยฐF and Goldfish's 50โ74ยฐF.
Is a Firefish Goby aggressive toward a Goldfish?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Firefish Goby and Goldfish
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 100 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 150 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 180 gal | Best when keeping larger schools or reducing territorial pressure. |