Cardinal Tetra and Severum Cichlid Compatibility Overview
Cardinal Tetra and Severum Cichlid are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Cardinal Tetra | Severum Cichlid | Verdict |
|---|---|---|---|
| Temperature | 73โ82ยฐF | 72โ84ยฐF | โ 73โ82ยฐF |
| pH Range | 4.5โ7.0 | 5.5โ7.0 | โ 5.5โ7.0 |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 1.5 in | 11.8 in | โ 8ร difference |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 100 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
Severum Cichlid โ Heros efasciatus
The Severum Cichlid, known for its vibrant colors and peaceful nature, is a popular choice for freshwater aquariums. They have a lifespan of around 5 years and require a minimum tank size of 80 liters. These fish are not schooling fish but are known to be gentle and compatible with a variety of tank mates.
Frequently Asked Questions
Can Cardinal Tetra live with Severum Cichlid?
Generally not recommended. Cardinal Tetra and Severum Cichlid are generally not recommended to be housed together. 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 Cardinal Tetra and Severum Cichlid together?
A minimum of 100 gallons is recommended for keeping Cardinal Tetra and Severum Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Cardinal Tetra and Severum Cichlid?
73โ82ยฐF โ inside Cardinal Tetra's 73โ82ยฐF and Severum Cichlid's 72โ84ยฐF.
Is a Cardinal Tetra aggressive toward a Severum Cichlid?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Cardinal Tetra and Severum Cichlid
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 | 220 gal | Best when keeping larger schools or reducing territorial pressure. |