Royal Gramma and Severum Cichlid Compatibility Overview
Royal Gramma and Severum Cichlid 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 | Royal Gramma | Severum Cichlid | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 72โ84ยฐF | โ 72โ82ยฐF |
| pH Range | 8.1โ8.4 | 5.5โ7.0 | โ No overlap |
| Temperament | semi | semi | โ ๏ธ Monitor |
| Adult Size | 3.0 in | 11.8 in | โ ๏ธ 3.9ร difference |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Royal Gramma โ Gramma loreto
The Royal Gramma, known for its vibrant blue coloration, is a popular saltwater fish among beginners and experienced aquarists alike. It requires a well-maintained tank with plenty of swimming space and a moderate current. With a peaceful temperament and a relatively easy care routine, the Royal Gramma can be a great addition to a community tank.
โ Full Royal Gramma 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 Royal Gramma live with Severum Cichlid?
Generally not recommended. Royal Gramma and Severum Cichlid 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 Royal Gramma and Severum Cichlid together?
A minimum of 100 gallons is recommended for keeping Royal Gramma and Severum Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Royal Gramma and Severum Cichlid?
72โ82ยฐF โ inside Royal Gramma's 72โ82ยฐF and Severum Cichlid's 72โ84ยฐF.
Is a Royal Gramma aggressive toward a Severum Cichlid?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Royal Gramma 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 | 180 gal | Best when keeping larger schools or reducing territorial pressure. |