Royal Gramma (Gramma loreto)
Royal Gramma (Gramma loreto)
Scientific Name: Gramma loreto
Common Name: Royal Gramma
Origin: CaribbeanTemperament: Peaceful (can be territorial with similar-shaped fish)
Reef Safe: Yes
Tank Size: 30+ gallonsColoration: Deep purple front half with bright yellow rear half; compact, vibrant body.
Placement: Rockwork and caves (mid to lower levels)
Lighting: Moderate–bright
Flow: Low–moderateDiet: Carnivorous — feeds on mysis, brine, finely chopped seafood, and quality pellets.
Feeding: 1–2 times dailySpecial Notes:
Hides in caves and crevices; excellent for reef tanks.
Very hardy once acclimated.Care Level: Easy
Royal Gramma
Scientific Name: Gramma loreto
Common Names: Royal Gramma Basslet
Overview
The Royal Gramma is a stunning and peaceful reef fish known for its bold purple-to-yellow coloration and hardy nature. Native to Caribbean reefs, this species is an excellent choice for both beginner and experienced aquarists looking to add vibrant color without sacrificing compatibility.
Size & Appearance
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Adult Size: Up to 3 inches
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Coloration: Deep purple front half with bright yellow rear half
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Body Shape: Compact, laterally compressed
Temperament & Compatibility
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Temperament: Peaceful to semi-aggressive
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Behavior: Can be territorial toward similar-shaped fish or other grammas
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Tank Mates: Clownfish, gobies, blennies, wrasses, peaceful tangs
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Reef Compatibility: Fully reef safe
Tank Requirements
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Minimum Tank Size: 30 gallons
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Tank Setup: Plenty of live rock, caves, and overhangs
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Preferred Zone: Rockwork and caves (mid to lower regions)
Lighting & Flow
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Lighting: Any
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Water Flow: Low to moderate
Diet & Feeding
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Diet: Carnivore
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Foods:
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Mysis shrimp
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Brine shrimp
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Finely chopped seafood
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High-quality pellets and frozen foods
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Feeding Frequency: 1–2 times daily
Water Parameters (Recommended)
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Temperature: 24–26°C (75–79°F)
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Salinity: 1.025–1.026
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pH: 8.1–8.4
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Hardiness: Very hardy once acclimated
Reef Safety
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Reef Safe: Yes
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Invertebrate Safety: Safe with shrimp, snails, and crabs
Care Level
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Care Level: Easy
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Best For: Beginner to advanced reef keepers
Fun Fact
Royal Grammas are known for their unique behavior of swimming upside down inside caves and rock crevices!

