Green Terror Cichlid and Pajama Cardinalfish Compatibility Overview
Green Terror 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. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Green Terror Cichlid | Pajama Cardinalfish | Verdict |
|---|---|---|---|
| Temperature | 68β75Β°F | 72β82Β°F | β οΈ 72β75Β°F (narrow) |
| pH Range | 6.5β8.0 | 8.1β8.4 | β No overlap |
| Temperament | aggressive | peaceful | β Risk |
| Adult Size | 11.8 in | 3.5 in | β οΈ 3.4Γ difference |
| Min. Group | 1+ | 3+ | See below |
| Min. Tank Size | 100 gallons (for both species) | β | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Green Terror Cichlid β Andinoacara rivulatus
The Green Terror Cichlid is a popular choice for experienced aquarists due to its striking appearance and vibrant colors. They are known for their aggression and should be kept in a species-specific tank. Their tall, laterally compressed bodies and vivid coloration make them visually appealing but require careful handling due to their potentially aggressiveβ¦
β Full Green Terror Cichlid care guide
Pajama Cardinalfish β 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 Green Terror Cichlid live with Pajama Cardinalfish?
Generally not recommended. Green Terror 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. 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 Green Terror Cichlid and Pajama Cardinalfish together?
A minimum of 100 gallons is recommended for keeping Green Terror Cichlid and Pajama Cardinalfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Green Terror Cichlid and Pajama Cardinalfish?
72β75Β°F (narrow) β inside Green Terror Cichlid's 68β75Β°F and Pajama Cardinalfish's 72β82Β°F.
Is a Green Terror Cichlid aggressive toward a Pajama Cardinalfish?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Green Terror 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 | 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. |