Foxface Rabbitfish and Oscar Compatibility Overview
Foxface Rabbitfish and Oscar 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: Foxface Rabbitfish wants 8.1โ8.4 and Oscar wants 6.0โ8.0. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Foxface Rabbitfish | Oscar | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 74โ81ยฐF | โ 74โ81ยฐF |
| pH Range | 8.1โ8.4 | 6.0โ8.0 | โ No overlap |
| Temperament | peaceful | aggressive | โ Risk |
| Adult Size | 9.0 in | 14 in | โ Similar |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Foxface Rabbitfish โ Siganus vulpinus
The Foxface Rabbitfish is a vibrant and peaceful addition to the marine aquarium. With its striking yellow coloration and dark spots, it adds a splash of color to the tank. They are known for their gregarious nature and can be kept in groups of 2-3. This species is suitable for beginners and intermediate aquarists.
โ Full Foxface Rabbitfish care guide
Oscar โ Astronotus ocellatus
Intelligent but aggressive cichlids that will eat any fish small enough to fit in their mouth. Require large tanks (75+ gallons) and robust tank mates.
Frequently Asked Questions
Can Foxface Rabbitfish live with Oscar?
Generally not recommended. Foxface Rabbitfish and Oscar 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: Foxface Rabbitfish wants 8.1โ8.4 and Oscar wants 6.0โ8.0. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Foxface Rabbitfish and Oscar together?
A minimum of 100 gallons is recommended for keeping Foxface Rabbitfish and Oscar together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Foxface Rabbitfish and Oscar?
74โ81ยฐF โ inside Foxface Rabbitfish's 72โ82ยฐF and Oscar's 74โ81ยฐF.
Is a Foxface Rabbitfish aggressive toward a Oscar?
Foxface Rabbitfish is peaceful and Oscar is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely.
Related Compatibility Guides
Tank Size for Foxface Rabbitfish and Oscar
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 125 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 180 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. |