Choosing Royal Gramma Tank Mates
Good Royal Gramma tank mates share the same temperature and pH window, will not be eaten by (or eat) the Royal Gramma, and do not compete for the same swimming zone or feeding time. Each pair guide below scores those factors from 0 to 100 and gives the minimum tank size for keeping both species together.
Start with the highest-scoring pairs; anything under 45 is listed so you know what to avoid, not as a recommendation.
Care baseline
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.
| Temperature | 72–82°F |
| pH | 8.1–8.4 |
| Adult size | 3.0 in |
| Minimum group | 1 |