Brazilian Gramma Care Guide
Gramma brasiliensis · Saltwater Basslet

What Brazilian Gramma look like
The Brazilian Gramma (Gramma brasiliensis) exhibits a striking coloration, characterized by a vibrant yellow body that transitions to a rich purple hue on the dorsal and caudal fins. This species can reach a maximum adult size of approximately 3 inches (7.5 cm) in standard length. Sexual dimorphism is subtle, with males typically displaying slightly larger and more elongated dorsal fins compared to females. A notable feature of this species is its elongated body shape, which is complemented by a small, terminal mouth equipped with fine, comb-like teeth adapted for grazing on small invertebrates. The Brazilian Gramma possesses a lateral line system that aids in detecting water movements, enhancing its ability to navigate through its reef habitat. Defensive adaptations include its ability to retreat into crevices within the reef structure, providing shelter from potential predators.
Behavior & temperament
The Brazilian Gramma is a territorial and social fish, often found in small groups or pairs within its natural habitat, typically residing in the crevices of coral reefs. It exhibits a diurnal behavior pattern, actively swimming at mid-levels of the water column. During breeding, males establish and defend territories, performing elaborate courtship displays to attract females. The species is generally peaceful but can exhibit territorial aggression towards intruders, especially during the breeding season. Its behavior includes darting movements and quick retreats into hiding spots when threatened, showcasing its cautious temperament.
Diet & feeding
In the wild, the Brazilian Gramma primarily feeds on small zooplankton and invertebrates, making it an opportunistic carnivore. In captivity, it thrives on a diet of high-quality frozen or live foods such as brine shrimp, mysis shrimp, and finely chopped seafood.
Behind the name
The genus name 'Gramma' is derived from the Greek word 'gramma,' meaning 'letter' or 'written character,' possibly referring to the fish's distinctive markings. The species name 'brasiliensis' indicates its geographical distribution, meaning 'of Brazil' in Latin.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Brazilian Gramma?
AquaLens identifies your fish and plants from a photo, tracks water chemistry, and flags health issues early — free on iOS and Android.

