Cardinal Tetra and Coral Beauty Compatibility Overview
Cardinal Tetra and Coral Beauty 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: Cardinal Tetra wants 4.5โ7.0 and Coral Beauty wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Cardinal Tetra | Coral Beauty | Verdict |
|---|---|---|---|
| Temperature | 73โ82ยฐF | 72โ82ยฐF | โ 73โ82ยฐF |
| pH Range | 4.5โ7.0 | 8.1โ8.4 | โ No overlap |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 1.5 in | 4.0 in | โ ๏ธ 2.7ร difference |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Cardinal Tetra โ Paracheirodon axelrodi
Brilliant red-and-blue schooling fish from the Rio Negro. Prefers soft, acidic, warm water โ a natural companion for discus.
โ Full Cardinal Tetra care guide
Coral Beauty โ Centropyge bispinosa
The Coral Beauty Angelfish is a popular choice for reef tanks due to its vibrant colors and gentle demeanor. These fish thrive in well-maintained aquariums with plenty of swimming space and hiding spots. They are generally peaceful with other compatible fish but can be sensitive to aggressive tankmates. A diet rich in variety is essential for their health.
Frequently Asked Questions
Can Cardinal Tetra live with Coral Beauty?
Generally not recommended. Cardinal Tetra and Coral Beauty 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: Cardinal Tetra wants 4.5โ7.0 and Coral Beauty wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Cardinal Tetra and Coral Beauty together?
A minimum of 55 gallons is recommended for keeping Cardinal Tetra and Coral Beauty together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Cardinal Tetra and Coral Beauty?
73โ82ยฐF โ inside Cardinal Tetra's 73โ82ยฐF and Coral Beauty's 72โ82ยฐF.
Is a Cardinal Tetra aggressive toward a Coral Beauty?
Cardinal Tetra is peaceful and Coral Beauty is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Cardinal Tetra and Coral Beauty
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 55 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 75 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 125 gal | Best when keeping larger schools or reducing territorial pressure. |