Common name: Regal Angelfish

General Information

The Regal Angelfish, scientifically known as Pygoplites diacanthus, is a stunning marine fish that captivates aquarists with its vibrant colors and striking patterns. This species is easily recognizable by its alternating bands of blue, white, and orange, making it a prized addition to any aquarium. Despite its beauty, the Regal Angelfish is known for being somewhat challenging to keep, requiring specific conditions to thrive.

In the aquarium trade, the Regal Angelfish is admired not only for its aesthetic appeal but also for its role in promoting awareness about marine biodiversity. Its presence in home aquariums can inspire conservation efforts and educate hobbyists about the delicate balance of coral reef ecosystems. However, due to its specific care requirements, it is best suited for experienced aquarists.

Care

Caring for a Regal Angelfish requires attention to detail and a commitment to maintaining stable water conditions. These fish thrive in large, well-established reef tanks with plenty of live rock for grazing and hiding. The tank should mimic their natural coral reef habitat, with ample swimming space and a variety of hiding spots to help them feel secure.

Regal Angelfish are sensitive to changes in water quality, so regular monitoring and maintenance are crucial. They prefer tanks with a mature biological filter and stable parameters, including temperature, pH, and salinity. A peaceful tank environment is essential, as they can be shy and easily stressed by aggressive tank mates.

Diet and Feeding

In the wild, Regal Angelfish are omnivorous, feeding on sponges, tunicates, and algae. In captivity, providing a varied diet is key to their health and coloration. Offer a mix of high-quality marine angelfish preparations, including frozen foods like mysis shrimp, brine shrimp, and sponge-based formulas.

Feed Regal Angelfish small portions multiple times a day to mimic their natural grazing behavior. Ensuring they receive a balanced diet with plenty of marine-based nutrients will help maintain their vibrant colors and overall health.

Behavior and Compatibility

Regal Angelfish are generally peaceful but can be shy, especially when first introduced to a new environment. They may take some time to acclimate and start feeding regularly. Once settled, they exhibit curious and active behavior, exploring their surroundings and interacting with other peaceful tank mates.

These angelfish are best kept in a species-specific tank or with other non-aggressive fish. Avoid housing them with overly aggressive or territorial species that may intimidate or outcompete them for food. Providing plenty of hiding spots can help reduce stress and encourage natural behavior.

Health and Common Issues

With proper care, Regal Angelfish can live for several years in captivity. Choosing a healthy specimen is crucial, as they can be prone to stress-related illnesses if not acclimated properly. Look for individuals with vibrant colors, clear eyes, and active behavior.

Common health issues include ich and bacterial infections, often resulting from poor water quality or stress. Regular water changes, a balanced diet, and a stress-free environment are key to preventing these problems.

Habitat

Regal Angelfish are native to the Red Sea and the Indo-Pacific region, inhabiting coral-rich areas of lagoons and outer reef slopes. They are commonly found at depths ranging from 1 to 50 meters (3 to 160 feet). Their natural habitat is characterized by warm, clear waters with abundant coral growth, providing both food and shelter.

There is a notable variation in color between populations from the Red Sea and the Indo-Pacific region. Red Sea individuals have a bright yellow ventral area and under the mouth, while Indo-Pacific individuals often exhibit a blue-gray hue in the same areas. These differences are more pronounced in adults. Genetic studies have led to the recognition of two subspecies: Pygoplites diacanthus flavescens (Red Sea and Indian Ocean) and Pygoplites diacanthus diacanthus (Pacific Ocean), reflecting divergence in genetics within the species.