
Gobies, blennies, and small marine fish
Royal Gramma
Gramma loreto
Photo: Smithsonian Institution from United States · No restrictions · Wikimedia Commons
Key facts
- Temperature24–27 °C
- pH8.1–8.4
- Minimum tank100 l
- Adult size8 cm
- Difficulty★☆☆☆☆
- TemperamentPeaceful
- WaterMarine
- Reef safeYes
Full profile
- Family
- Grammatidae
- Origin
- Western Caribbean (Bahamas to Venezuela)
- Size
- 8 cm
- Temperature
- 24 – 27°C
- pH
- 8.1 – 8.4
- Salinity
- 1.023 – 1.025
- Difficulty
- ★☆☆☆☆
- Water type
- marine
- Swimming level
- medium
- Behavior
- Peaceful (territorial with similar fish)
- Minimum number of individuals
- 1
- Minimum aquarium size
- 100 L
- Diet
- carnivore
- Reproduction
- oviparous; the male builds a nest out of algae
- Reef Safe
- ✅ Yes
Notes: The front half is purple and the back half is yellow. It lives near caves and often swims on its back under overhangs. Very hardy and suitable for reef tanks.





