Jewel Cichlid and Pajama Cardinalfish Compatibility Overview
Jewel Cichlid and Pajama Cardinalfish 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: Jewel Cichlid wants 6.0โ7.8 and Pajama Cardinalfish wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Jewel Cichlid | Pajama Cardinalfish | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 72โ82ยฐF | โ 72โ82ยฐF |
| pH Range | 6.0โ7.8 | 8.1โ8.4 | โ No overlap |
| Temperament | aggressive | peaceful | โ Risk |
| Adult Size | 5.9 in | 3.5 in | โ Similar |
| Min. Group | 2+ | 3+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Jewel Cichlid โ Hemichromis bimaculatus
The Jewel Cichlid, Hemichromis bimaculatus, is a vibrant and territorial fish popular in the aquarium trade. They require a spacious tank with hiding spots and can be moderately aggressive. With proper care, they can be a rewarding addition to the home aquarium.
โ Full Jewel Cichlid care guide
Pajama Cardinalfish โ Sphaeramia nematoptera
The Pajama Cardinalfish is a popular, beginner-friendly fish that can add a splash of color to your aquarium. They are generally peaceful and can be kept in a community tank. With moderate activity levels and a preference for undisturbed swimming spaces, they require a well-maintained water quality and a spacious tank.
Frequently Asked Questions
Can Jewel Cichlid live with Pajama Cardinalfish?
Generally not recommended. Jewel Cichlid and Pajama Cardinalfish 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: Jewel Cichlid wants 6.0โ7.8 and Pajama Cardinalfish wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Jewel Cichlid and Pajama Cardinalfish together?
A minimum of 75 gallons is recommended for keeping Jewel Cichlid and Pajama Cardinalfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Jewel Cichlid and Pajama Cardinalfish?
72โ82ยฐF โ inside Jewel Cichlid's 72โ82ยฐF and Pajama Cardinalfish's 72โ82ยฐF.
Is a Jewel Cichlid aggressive toward a Pajama Cardinalfish?
Jewel Cichlid is aggressive and Pajama Cardinalfish is peaceful. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely.
Related Compatibility Guides
Tank Size for Jewel Cichlid and Pajama Cardinalfish
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. |