Royal Gramma Basslet
The Royal Gramma Basslet brings a burst of color to any saltwater aquarium. It has a bright purple to violet colored anterior contrasted by a vibrant yellow posterior. Coveted for both its unique color pattern and relatively small adult size, Gramma loreto is a great beginner fish that is well suited for small nano reef systems.
Native to the deep-water reefs of the Caribbean, this member of the Grammidae family prefers extensive rockwork caves in which to hide and somewhat subdued lighting. Since it demonstrates territorial aggression towards its own kind, the Royal Gramma Basslet should be housed singly. However, most Royal Gramma Basslets are peaceful towards tankmates of similar size and temperament.
| Specifications |
|---|
| Species: Gramma loreto |
| Adult Size: 2.5 inches |
| Water Temperature: 75-82°F |
| Lighting: Subdued |
| Compatibility: Peaceful with similar-sized tankmates; avoid other Gramma species |
| Water Conditions: Salinity 1.020–1.025, pH 8.1–8.4 |
FAQ
What is the ideal tank setup for a Royal Gramma Basslet?
The Royal Gramma Basslet thrives in a reef system with extensive rockwork and caves for hiding. Subdued lighting is recommended to mimic its natural habitat in the Caribbean.
Can Royal Gramma Basslets be kept with other fish?
Most Royal Gramma Basslets are peaceful with tankmates of similar size and temperament. However, they should be kept singly due to territorial aggression toward their own kind. Avoid keeping with other Gramma species.
What is the typical adult size of a Royal Gramma Basslet?
The adult size of a Royal Gramma Basslet is approximately 2.5 inches.

Una Sutherland –
Added a Royal Gramma Basslet to my 10-gallon nano reef and it’s been thriving. The color contrast between the purple front and yellow back is stunning. It hides well in the rockwork and seems active during the day. Very easy to care for and a great addition to a small tank.
Jane McGrath –
This fish is vibrant and adds a lot of visual interest. I kept it alone as recommended, and it hasn’t shown aggression. The lighting in my tank is low, which matches what the species prefers. It’s a great choice for beginners.
Victor Wallace –
I’ve had this fish for three months now and it’s still healthy and active. The color is bright and stands out in the tank. I appreciate that it doesn’t stress other fish, even though it’s small and territorial with its own kind.