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Royal Gramma

Royal Gramma

Breed InfoHabitatNutritionHealth

Origin

🇦🇬

Antigua And Barbuda

Habitat Size

50-150 Liters

Water Type

Salt Water

Water Temperature

24º-27ºC

Cost in India

₹80 - ₹150

Size

2 - 6 inches (Small)

Diet

Herbivore

Purple and yellow fish swims right against a blurry background
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by Happy Pet TeamUpdated on 2 Dec 2025

The Royal Gramma (Gramma loreto) is a tiny, brightly hued sea fish prized for its beautiful purple forehead that becomes yellow towards the tail. Peaceful and lovely to behold, it is a popular choice for reef tanks.

Males are slightly larger and can show brighter color, females are smaller and more rounded. Royal Gramma is a semi-aggressive, inquisitive, interactive fish, frequently looking out from under crevices and flowing elegantly through the aquarium. Their bright color and miniature size make them an ideal fish for new and experienced marine aquarists as well.

Origin of the Royal Gramma

Royal Grammas occur naturally in the tropical western Atlantic Ocean, specifically in the Caribbean Sea, Bahamas, and Florida reefs. They live in crevices of coral and rock crevices at a depth of 1–60 meters. In the wild, they consume zooplankton and small invertebrates, and are extremely territorial in their chosen hiding places. Royal Grammas bred in captivity are now widely distributed, so hobbyists can enjoy them without impacting wild populations.

Temperament of the Royal Gramma

Royal Grammas are calm but semi-aggressive. They protect zones around refuges and will chase other small fish entering their space but hardly attack big ones. With their easy gliding motion and inquisitive nature, they are a very active species. They are perfectly suited for peaceful species community reef aquariums.

Royal Gramma Compatibility with Other Fish

Royal Grammas are compatible with other peaceful marine species. Suitable tankmates are:

  1. Clownfish and gobies
  2. Tangs and wrasses
  3. Other small, docile fish

Do not house them with excessively aggressive fish or large predators since Royal Grammas become stressed. Providing them with live rock or coral crevices makes them feel secure and be able to defend territories.

Price Range of the Royal Gramma

Royal Grammas are inexpensive and reasonably typical. They range from ₹1,200 to ₹2,500 (US $15–35), depending on size, age, and wild-caught or captive-bred. Owing to their size, most aquarists only have one or two in reef aquariums to provide splashes of color without overcrowding.

Characteristics

Temperament

Aggressive

Friendly

Compatibility with other fishes

Not Friendly

Super Friendly

Habitat Size

Small

Large

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Habitat Requirements of the Royal Gramma

Initial Setup Cost

₹4,000 - ₹12,000

Water Temperature

24º -27ºC

Water Type

Salt Water

PH Level

8.1 - 8.4

Tank Setup

  1. Minimum tank size: 30 gallons for one fish
  2. Recommended: 50 gallons or more for several species
  3. Features: abundant places to hide, live rock, and open swimming areas

Water Conditions

  1. Temperature: 24–27°C (75–81°F)
  2. pH level: 8.1–8.4
  3. Salinity: 1.020–1.025 specific gravity
  4. Hardness: 8–12 dKH

Environment Needs

  1. Substrate: sand or crushed coral
  2. Decorations: live rock and coral for hiding and territorial marking
  3. Lighting: reef-standard lighting to highlight deep coloration

Essential Equipment

Aquarium tank

Water filter

Heater

Light

Substrate

Nutritional Guide of the Royal Gramma

Avg Monthly Expenses

₹80 - ₹ 150

Royal Grammas are carnivorous and thus need a high-protein diet. Good food to feed them includes:

  1. Staple: high-grade marine pellets or flakes
  2. Protein: mysis shrimp, brine shrimp, chopped seafood
  3. Treats: finely chopped krill or other meaty marine food

Feeding tips:

  1. Feed 2 times a day in small quantities
  2. Cycle diet to preserve color and health
  3. Dispose of uneaten food to avoid water quality problem
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Health & Care of the Royal Gramma

Common Health Issues

Fin rot

White spot / ick

Velvet disease (yellowish-brown spots on the skin)

Bacterial infections

Swim bladder inflammation

Parasites

Signs of good health

Active

Good apetite

Bright coloration

Undamaged fins

Signs of sickness

Loss of appetite

Lethargic behaviour

Frequent hiding

Dull coloring

Swimming abnormally

Common Problems of the Royal Gramma

Marine Ich (Cryptocaryon)

A common saltwater parasite that appears as white spots on the body and fins.

  1. Symptom: Fading or patchy color, scratching against surfaces.
  2. Cure: Treat with marine-safe anti-parasitic medication and maintain stable salinity.

Fin Damage from Aggression or Poor Water Quality

Caused by bullying tank mates or suboptimal tank conditions.

  1. Symptom: Clamped, frayed, or torn fins.
  2. Cure: Improve water quality, separate aggressive fish, and maintain proper filtration.

Stress from Lack of Hiding Places

Stress weakens immunity and can trigger illness.

  1. Symptom: Loss of appetite, excessive hiding, or lethargy.
  2. Cure: Provide live rock, crevices, or coral for shelter and secure territories.

Prerequisites for a Fish

Adequate tank space

Cleanliness

Effort & commitment

Enriching Environment

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Written by

Happy Pet Team

Author

Team Happy Pet is a passionate collective of pet experts, enthusiasts, and advocates dedicated to sharing trusted and insightful content.

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Frequently Asked Questions

What do Royal Grammas eat?

Royal Grammas are carnivores and need a diet of small meaty foods like brine shrimp and mysis shrimp.

Are Royal Grammas suitable for beginners?

Yes, Royal Grammas are hardy and easy to care for, making them suitable for beginners.

How much does it cost to set up a Royal Gramma tank?

The initial setup cost for a Royal Gramma tank can range from 4000 INR to 12000 INR, depending on the quality of equipment and size of the tank.