Common Name
Regal Angelfish Or The Royal Angelfish
Scientific Name
Pygoplites diacanthus
Family Name
Pomacanthidae
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Quick Care Details (Table)
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Livestock Characteristics Value
Care Level Expert
Temperament Semi-Aggressive
Diet Omnivore
Maximum Size 10 Inches
Minimum Tank Size 125 Gallons
Reef Compatible With Caution
Temperature Range 72-78F
PH Range 8.1-8.4
DKH Range 8-12
Salinity Range 1.020-1.025
Species Specific Categories
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    Care Details

    Aquascape: For the aquascape, create a marine reef environment with plenty of live rock and coral formations. Provide ample hiding spots and caves, but ensure there's enough open swimming space. This mimics their natural habitat on coral reefs.

    Substrate: A fine coral sand substrate is ideal for the Regal Angelfish, as they often forage for food in the sand. Keep it clean to prevent detritus buildup.

    Disease Prevention: Disease prevention is crucial. Quarantine new fish before adding them to the main tank, maintain stable water conditions, and provide a varied diet to boost their immunity.

    Filtration: Use a robust filtration system to maintain water quality. A protein skimmer is valuable for removing organic waste. Consider a sump system with a refugium for added filtration.

    Lighting: Moderate to high-intensity lighting is needed to support the live corals and other photosynthetic organisms in your tank, as well as to highlight the vibrant colors of the Regal Angelfish.

    Water Flow: Regal Angelfish come from areas with strong water flow. Use powerheads and wave-makers to create gentle to moderate water movement in the tank.

    Hardiness: Regal Angelfish are considered moderately hardy when provided with the right conditions. However, they are more suitable for intermediate to advanced aquarists due to their specific care requirements.

    Acclimation: When introducing new fish, practice proper acclimation. Gradually adjust them to water conditions by floating the bag in the tank and adding tank water over time to reduce stress.

    Expected Lifespan: With proper care, Regal Angelfish can live for an average of 5 to 10 years. However, individual lifespans can vary.

    Special Requirements: The Regal Angelfish has specific dietary needs, primarily preferring a diet of sponges and other marine invertebrates. Ensure a variety of suitable foods, including high-quality flakes, pellets, and occasional live or frozen fare to meet their dietary requirements.

    Temperament and Behavior

    Behavior and Social Interaction: Regal Angelfish are generally peaceful and solitary fish. They may occasionally form pairs or small groups in the wild, but in aquariums, they tend to be solitary. They are curious and will explore their surroundings.

    Aggression: While Regal Angelfish are not highly aggressive, they may become territorial, especially in smaller tanks or when kept with similar species. They can be finicky eaters and may chase away potential competitors from their preferred food sources.

    Breeding: Breeding Regal Angelfish in captivity is challenging due to their specific habitat requirements. They are known to spawn in pairs, but successful breeding in a home aquarium is relatively rare.

    Compatibility with Inverts and Fish: Regal Angelfish are generally reef-safe when it comes to corals and invertebrates. However, they may pick at small crustaceans or ornamental shrimp. When it comes to tankmates, choose non-aggressive species that won't outcompete them for food.

    Activity Level: These angelfish are moderately active during the day. They swim in a deliberate and graceful manner, often exploring the live rock and coral formations in the tank.

    Clean-Up Crew: Regal Angelfish are not considered part of the "clean-up crew" in a reef tank. They are primarily ornamental fish and should not be relied upon for algae control or detritus cleaning.

    Schooling or Shoaling Behavior: Regal Angelfish do not exhibit schooling or shoaling behavior. They are more solitary by nature and do not need the company of large groups of their own kind.

    Coral Reef Compatibility: Regal Angelfish are generally considered reef-safe with caution and can be kept in a reef tank with caution. They may nip at certain coral polyps or small invertebrates, so monitor their behavior and tank compatibility.

    Diet and Nutrition

    Dry Foods: Regal Angelfish can be trained to accept high-quality dry foods like marine pellets and flakes. Look for products with a variety of ingredients to ensure a balanced diet. However, dry foods should not be the sole component of their diet.

    Frozen Foods: Frozen foods are a valuable part of their diet. Offer them frozen foods like brine shrimp, mysis shrimp, and other small marine invertebrates. These provide essential nutrients and variety.

    Live Foods: While not an absolute necessity, some aquarists offer live foods like small bristle worms, copepods, and amphipods to simulate their natural diet. This can be particularly beneficial when conditioning them for breeding.

    Vegetables: Regal Angelfish are primarily carnivorous and don't require vegetables as a significant part of their diet. However, they may occasionally nibble on marine-based plant matter in the aquarium.

    Algae: Although they may graze on algae occasionally, Regal Angelfish are not considered effective algae-eaters. If you have an algae issue in your tank, consider other species to control it.

    Feeding Schedule: Feed them small, frequent meals throughout the day. It's best to feed them 2-3 times daily, as this mimics their natural feeding behavior and ensures they get enough sustenance.

    Supplemental Foods: Supplement their diet with high-quality, marine-based foods. Consider offering live or frozen foods, as well as products designed for angelfish or herbivorous marine species to provide a well-rounded diet.

    Tank Size: Regal Angelfish require a spacious aquarium due to their adult size and swimming habits. A tank size of at least 125 gallons (473 liters) is recommended to provide them with enough space to swim and thrive.

    Tank Length and Measurements: A suitable tank for Regal Angelfish should be at least 6 feet (1.8 meters) in length to accommodate their swimming patterns. They are a tall and vertically oriented fish, so a tank with appropriate height is important.

    Water Temperature: Maintain the water temperature in the range of 72 to 78 degrees Fahrenheit (22 to 26 degrees Celsius). Keeping the temperature stable is crucial for their health and well-being.

    pH (Acidity/Alkalinity): Regal Angelfish prefer a slightly alkaline to neutral pH level, typically ranging from 8.1 to 8.4. Ensure that the pH remains stable within this range.

    KH (Carbonate Hardness): The carbonate hardness (KH) should be maintained at a level of 8 to 12 degrees. This helps buffer the pH and provides stability, which is essential for these fish.

    GH (General Hardness): A general hardness (GH) level of 8 to 12 degrees is suitable for Regal Angelfish. This range ensures they receive essential minerals and maintains water stability.

    Hardiness: Regal Angelfish are considered moderately hardy when provided with the right conditions. They are best suited for intermediate to advanced aquarists due to their specific care requirements.

    Nitrate (NO3) levels: It's important to keep nitrate levels low in the aquarium to ensure the well-being of Regal Angelfish. Aim to keep nitrates below 20 ppm (parts per million) through regular water changes and efficient filtration.

    History, Popularity, History and Species Variety Details
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    The History, popularity, and natural habitat

    History: The Regal Angelfish (Pygoplites diacanthus) is a true gem in the world of marine aquariums. This striking fish, recognized for its vibrant colors and unique shape, has been an admired marine species for years. It's native to the Indo-Pacific region, where it graces the coral reefs with its regal presence.

    Popularity: Renowned for its breathtaking beauty and graceful demeanor, the Regal Angelfish is a coveted species among marine enthusiasts. Its brilliant electric blue and yellow stripes, coupled with its elegant, disc-shaped body, make it a centerpiece in many reef aquariums. However, its popularity comes with a caveat – the Regal Angelfish can be quite challenging to care for, requiring specific water conditions and a well-maintained tank.

    Natural Habitat: In the wild, Regal Angelfish can be found in the warm waters of the Indian and Pacific Oceans, from the Red Sea to Australia. They are typically seen darting in and out of the crevices of coral reefs. These reefs provide them with natural hiding spots and access to the sponges and small invertebrates they feed on.

    Understanding the historical significance, allure, and natural habitat of the Regal Angelfish helps us appreciate this mesmerizing marine creature and the care it requires in our home aquariums.

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    Similar Angelfish to the Regal Angelfish

    1. Emperor Angelfish (Pomacanthus imperator): Emperor Angelfish is another stunning marine species with a similar body shape to the Regal Angelfish. They are known for their royal blue and yellow colors, but they have a different pattern, with vertical black and white stripes on the body and a bright yellow tail.
    2. Blue-faced Angelfish (Pomacanthus xanthometopon): Blue-faced Angelfish have a similar body shape but feature a blue face and a striking yellow body. They also have a distinctive black, crescent-shaped marking on the caudal fin.
    3. Koran Angelfish (Pomacanthus semicirculatus): Koran Angelfish have a circular pattern on their sides with bold blue and yellow colors. They may have some similarities in body shape but have a different pattern compared to the Regal Angelfish.
    4. Swallowtail Angelfish (Genicanthus melanospilos): Swallowtail Angelfish are known for their elongated, swallowtail-like caudal fin. They have a more elongated body shape and come in various color variations, including shades of blue, yellow, and black.
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    Frequently Asked Questions
    Livestock FAQ

    Are they known to breed in home aquariums?

    Breeding Regal Angelfish in a home aquarium is challenging due to specific habitat requirements and is relatively rare.

    Can they be kept in pairs or groups?

    In the wild, they may form pairs, but in captivity, they are usually solitary.

    Are Regal Angelfish good for algae control?

    They are not effective algae-eaters. Consider other species for controlling algae in your tank.

    Do they require any special lighting or water flow in the tank?

    Moderate to high-intensity lighting is needed to support corals and enhance their vibrant colors. Ensure gentle to moderate water flow to simulate their natural habitat.

    What's their preferred diet?

    Their diet should include a mix of high-quality marine pellets, frozen foods, and live foods. Offer variety to ensure a balanced nutrition.

    Can they be kept with other fish and invertebrates?

    Regal Angelfish are generally reef-safe and compatible with non-aggressive tankmates. However, be cautious with ornamental shrimp.

    What's the ideal tank size for them?

    A tank of at least 125 gallons (473 liters) is recommended to provide adequate space for their graceful swimming.

    Are they easy to care for?

    Regal Angelfish require specific care, making them more suitable for experienced marine aquarists.

    How big do Regal Angelfish grow?

    These angelfish can reach up to 10 inches (25 cm) in length when fully grown.

    What makes the Regal Angelfish so special?

    The Regal Angelfish is cherished for its stunning electric blue and yellow stripes, resembling a work of art in marine aquariums.

    Author's Name: rtorres
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