Royal Gramma

About this fish

Royal Gramma is a reef aquarium fish sold under the common name “Royal Gramma,” with the scientific name Gramma loreto. This small, colorful species is typically kept for its hardy personality, steady behavior in established systems, and its habit of using rockwork and caves for cover—making it a popular choice for reef tanks that have plenty of hiding spots.

Features:

• Peaceful-to-semi-aggressive temperament: generally compatible with many community fish, but it benefits from an aquarium with multiple shelters
• Great “rockwork” fish: stays near live rock/caves and will use the scape for resting and security
• Carnivorous feeding habits: actively targets small meaty foods and usually responds well to varied diets
• Often best introduced after the tank has matured, since it tends to settle and feed more reliably in stable, established conditions
• Reef-friendly in typical setups when not paired with species that compete for the same shelter space

Specifications:

• Scientific name: Gramma loreto
• Care level: Moderate (generally suitable for maintained marine/reef aquariums)
• Temperament: Typically peaceful with other tankmates; provide space and caves
• Minimum tank environment: Marine aquarium with live rock and multiple hiding spots
• Adult size: About 3.5 in (9 cm)
• Diet: Carnivorous; small meaty foods such as mysis/brine shrimp and appropriately sized frozen or pellet foods
• Temperature: About 72–78°F (22–26°C)
• pH: About 8.1–8.4
• Salinity: About 1.020–1.025 (specific gravity)
• Water flow: Moderate water movement; not a high-flow fish