Jewel Cichlid and Threadfin Rainbowfish Compatibility Overview
Jewel Cichlid and Threadfin Rainbowfish are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Jewel Cichlid is aggressive and Threadfin Rainbowfish is peaceful. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Jewel Cichlid | Threadfin Rainbowfish | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 72โ86ยฐF | โ 72โ82ยฐF |
| pH Range | 6.0โ7.8 | 5.0โ8.0 | โ 6.0โ7.8 |
| Temperament | aggressive | peaceful | โ Risk |
| Adult Size | 5.9 in | 1.6 in | โ ๏ธ 3.7ร difference |
| Min. Group | 2+ | 6+ | 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
Threadfin Rainbowfish โ Iriatherina werneri
The Threadfin Rainbowfish is a popular choice for freshwater aquariums due to its vibrant colors and peaceful nature. It requires a well-maintained tank with plenty of swimming space and a moderate water flow. These fish are not known to be aggressive and can be kept in community tanks with other peaceful species.
Frequently Asked Questions
Can Jewel Cichlid live with Threadfin Rainbowfish?
Generally not recommended. Jewel Cichlid and Threadfin Rainbowfish are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Jewel Cichlid is aggressive and Threadfin Rainbowfish is peaceful. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Jewel Cichlid and Threadfin Rainbowfish together?
A minimum of 75 gallons is recommended for keeping Jewel Cichlid and Threadfin Rainbowfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Jewel Cichlid and Threadfin Rainbowfish?
72โ82ยฐF โ inside Jewel Cichlid's 72โ82ยฐF and Threadfin Rainbowfish's 72โ86ยฐF.
Is a Jewel Cichlid aggressive toward a Threadfin Rainbowfish?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Jewel Cichlid and Threadfin Rainbowfish
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. |