Common name: Rock Beauty

General Information

The Rock Beauty, scientifically known as Holacanthus tricolor, is a striking species admired for its vibrant coloration and unique appearance. This species is a popular choice among marine aquarium enthusiasts due to its bold colors and fascinating behavior. The Rock Beauty is native to the Western Atlantic, ranging from Bermuda and the Bahamas to Brazil, including the Gulf of Mexico and the Caribbean Sea.

In the aquarium trade, the Rock Beauty is valued for its vivid yellow and blue-black coloration. Juveniles are predominantly yellow with a blue-black spot on the upper back, while adults display a more pronounced contrast with a blue-black body and bright yellow head and tail. This dramatic color change as they mature is one of the characteristics that make them particularly interesting to hobbyists.

Care

Caring for the Rock Beauty requires some experience due to its specific dietary needs and sensitivity to water quality. They thrive in large, well-established aquariums with plenty of live rock for grazing and hiding. A tank size of at least 300 liters is recommended to accommodate their active swimming and territorial nature.

Maintaining stable water parameters and providing a varied diet rich in marine algae and sponges is crucial for their health. They are known to be somewhat finicky eaters, so offering a variety of foods, including high-quality angelfish preparations, can help meet their nutritional needs.

Diet and Feeding

In the wild, Rock Beauties primarily feed on sponges and algae. In captivity, replicating this diet can be challenging but is essential for their well-being. A diet that includes marine algae, spirulina, and specially formulated angelfish foods containing sponge matter is recommended.

Feeding should occur several times a day in small amounts to ensure they receive adequate nutrition without overloading the tank's filtration system. Observing their eating habits and adjusting the diet as needed can help maintain their vibrant coloration and overall health.

Behavior and Compatibility

Rock Beauties are known for their semi-aggressive temperament, particularly towards other angelfish and similarly shaped species. They can be territorial, especially in smaller tanks, so providing ample space and hiding spots is important to reduce stress and aggression.

They are best kept as solitary individuals or in a well-planned community tank with other non-aggressive species. Care should be taken when introducing them to a new environment, as they can be sensitive to changes in water quality and tank mates.

Health and Common Issues

Rock Beauties can live up to 10 years in captivity with proper care. Ensuring a stable environment and a diet rich in marine algae and sponges is key to their longevity. They are susceptible to common marine diseases such as ich and marine velvet, so maintaining excellent water quality and quarantining new additions is crucial.

When selecting a Rock Beauty, look for individuals with bright, clear eyes and vibrant coloration. Avoid fish that appear lethargic or have visible signs of disease. Regular monitoring and prompt treatment of any health issues can help ensure a long and healthy life for this beautiful species.