Melas (Keyhole) Angelfish

Centropyge tibicen

(1 Reviews)

Melas (Keyhole) Angelfish

Melas (Keyhole) Angelfish

Centropyge tibicen

(1 Reviews)

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Care Facts

Care Level: Moderate
Temperament: Semi-Aggressive
Diet: Omnivore
Reef Safe: No
Minimum Tank Size: 70 gallons
Max Size: 8 inches
The Melas (Keyhole) Angelfish, Centropyge tibicen, features an all blue/black body color with a splash of yellow on the bottom fins and a bright blue highlight on the tail with the famous white "keyhole" spot bisecting the body. Due to aggression towards other Angelfish they are best kept singly but will do well with other fish.

They are not reef safe, as they will nip at soft and stony polyp corals, sessile invertebrates and clam mantles. Diet should include a variety of spirulina, marine algae, seaweed, high quality angelfish preparations, mysis and brine shrimp, 3 times daily.

Melas (Keyhole) Angelfish (Centropyge tibicen) for Saltwater Aquariums

The Melas Angelfish, scientifically known as Centropyge tibicen, is a captivating marine species that can make an intriguing addition to your saltwater aquarium. Known for its distinctive appearance and moderate care requirements, this angelfish species offers a unique aquatic companion for enthusiasts.

Melas (Keyhole) Angelfish Habitat:

Melas Angelfish are native to the Indo-Pacific Ocean and inhabit coral-rich reefs and rocky outcrops. In the wild, they are often found in crevices and caves among the coral formations.

Reef Compatibility with Melas (Keyhole) Angelfish:

Melas Angelfish are generally not considered reef-safe, as they are known to harm or disturb corals or other reef invertebrates. However, individual behavior can vary, so careful monitoring is advisable when introducing them to a reef tank.

Size and Lifespan of Melas (Keyhole) Angelfish:

In captivity, Melas Angelfish typically reach a length of around 8 inches (20 centimeters) at maturity. They can live for an average of 5 to 7 years with proper care.

Diet in Captivity for Melas (Keyhole) Angelfish:

Maintaining the health and vibrancy of your Melas Angelfish requires providing a balanced diet. They are omnivorous and thrive on a diet including high-quality marine pellets, flake foods, and various frozen offerings such as brine, mysis, and spirulina.

Aquaculture Availability of Melas (Keyhole) Angelfish:

Most specimens available to hobbyists are sourced from the wild. It is advisable to check with reputable suppliers for the most current information.

Compatibility with Other Fish and Invertebrates for Melas (Keyhole) Angelfish:

Melas Angelfish are generally peaceful and can coexist with other marine species. Compatible tankmates include:

  • Firefish Goby (Nemateleotris magnifica): These colorful gobies are known for their peaceful nature and can share an aquarium with Melas Angelfish.
  • Royal Gramma (Gramma loreto): Royal Grammas are relatively small and non-aggressive, making them suitable companions.
  • Six Line Wrasse (Pseudocheilinus hexataenia): Six Line Wrasses are active swimmers and can coexist peacefully with Melas Angelfish.
  • Clownfish (Amphiprioninae): Various clownfish species, known for their gentle nature, can be compatible tank mates.
  • Purple Firefish (Nemateleotris decora): These fish add striking colors to your aquarium and are known for their peaceful disposition.

Sexual Dimorphism in Melas (Keyhole) Angelfish:

Melas Angelfish do not exhibit significant sexual dimorphism, making it challenging to distinguish males from females based on physical characteristics alone.

Juvenile to Adult Coloration Changes in Melas (Keyhole) Angelfish:

Juvenile Melas Angelfish boasts a striking coloration, featuring bold black and yellow stripes with a distinctive keyhole-shaped marking near their tail fin. As they mature, these colors become less pronounced, giving way to a more subtle and elegant appearance. Adult specimens typically display a subdued blue-black body with a keyhole marking, making them unique and visually appealing.

Temperament of Melas (Keyhole) Angelfish:

Melas Angelfish are known for their generally peaceful temperament. However, like many angelfish species, they may become territorial as they mature. Ensuring sufficient hiding spots and space in the aquarium can help mitigate potential aggression.

Tank Requirements for Melas (Keyhole) Angelfish:

To provide an ideal environment for your Melas Angelfish, consider the following tank requirements:

  • Minimum Aquarium Size: A tank with a capacity of at least 70 gallons is recommended to accommodate their size and swimming habits.
  • Water Conditions:
    • pH: Maintain a stable pH level between 8.1 and 8.4.
    • Salinity: Keep the salinity in the range of 1.020 to 1.025.
    • Water Temperature: Maintain the water temperature within the range of 75-82°F (24-28°C).
    • Water Flow: Moderate water flow is suitable to mimic their natural habitat.

Common Names of Melas (Keyhole) Angelfish:

The Melas Angelfish is also known as the Keyhole Angelfish.

Why Choose for Melas (Keyhole) Angelfish:

When considering where to purchase your Melas (Keyhole) Angelfish, offers several advantages:

  • Wide Selection: provides a diverse range of marine fish, including the Melas Angelfish, ensuring you can find the perfect addition to your aquarium.
  • Quality Assurance: They prioritize sourcing healthy and vibrant specimens to give your new aquatic companion the best start.
  • Expertise: With years of experience in the marine aquarium industry, can offer valuable advice and support to ensure your success as a marine hobbyist.
  • Convenience: Ordering from provides a convenient way to access a variety of marine species, with shipping options available to deliver your fish safely to your door.

In conclusion, the Melas (Keyhole) Angelfish, with its distinctive appearance and manageable care requirements, can be an intriguing addition to your saltwater aquarium. By providing the appropriate habitat, tankmates, and diet, you can enjoy the unique beauty of this species while ensuring its well-being and longevity in your care. Consider as your trusted source for acquiring a Melas (Keyhole) Angelfish to enhance your marine aquarium experience.

Fish almost has a purple hue depending how the light hits him just beautiful. Great addition to my tank.

Reviewed by: Linda Harvan on Feb. 10, 2015

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