Royal Gramma
Gramma loreto
A small purple-to-gold Caribbean basslet that is hardy, reef safe and one of the best first marine fish.
Ideal Conditions
- Temperature
- 23 – 27 °C
- pH range
- 8.1 – 8.4
- Salinity
- 1.023 – 1.026 SG
- Adult size
- 6 – 8 cm
- Min. tank size
- 100 litres+
- Lifespan
- 5 – 8 years
- Diet
- Carnivore — mysis, brine shrimp and quality pellets
- Water flow
- Low to moderate
- Preferred setup
- Reef aquarium with caves, overhangs and rockwork
About the Royal Gramma
The Royal Gramma is compact, colourful and undemanding. It stays near rockwork, often hovering upside down beneath ledges, and it is a genuinely good choice for a smaller reef system.
Find Royal Gramma
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Is it right for your tank?
Check Royal Gramma against a habitat you already keep. We compare water type, temperature, pH, adult size, group needs and everything living there.
Where Royal Gramma comes from
Native range
Western Atlantic, Caribbean
Countries / regions
Bahamas, Belize, Venezuela
Habitat
Caribbean reef walls, caves and overhangs, often in dim, sheltered spots.
Illustrative native range only, not an occurrence dataset.
Similar species
Royal Dottyback
Pictichromis paccagnellae
Yellow Watchman Goby
Cryptocentrus cinctus
We’re adding more full species guides as the catalogue grows.
Compatible tank mates
Reviewed guidance based on this species' recorded traits.
- Great
Yellow Watchman Goby
Cryptocentrus cinctus
Burrows in open sand, so the two never compete for the same shelter.
- Great
Yellow Tang
Zebrasoma flavescens
Open-water grazer with no interest in caves or small basslets.
- Compatible with caution
Six Line Wrasse
Pseudocheilinus hexataenia
Both are territorial in small systems; give plenty of rockwork and add the gramma first.
Current marketplace listings
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