Saltwater Fish
Rock Beauty

Species Description…

Scientific Name: Holacanthus tricolor
Common Name: Rock Beauty
Species Group: Angelfish
Habitat: Reef Safe
Care Level: Intermediate
Temperament: Semi-aggressive
Diet Type: Omnivore
Role in Aquarium: Showpiece Fish
Max Fish Length: 12 (inches)
Min Aquarium Size: 100 (gallons)
Native Range: Western Atlantic, including the Caribbean Sea, Gulf of Mexico, and Florida
Holacanthus tricolor - Rock Beauty

Holacanthus tricolor (Rock Beauty)

Overview

  • Native to the Western Atlantic Ocean, particularly common throughout the Caribbean Sea.
  • Distinctively marked by its vibrant yellow and black coloration, with a striking blue margin around the eyes.
  • Typically inhabits coral reefs and rocky outcroppings, hence the name "Rock Beauty."
  • Popular among advanced marine hobbyists due to its striking appearance and unique behavior.

Feeding

  • Primarily feeds on sponges in the wild; considered a specialized feeder.
  • In aquariums, can adapt to diets containing sponge-based preparations, marine algae, spirulina, mysis shrimp, and specially formulated angelfish foods.
  • Important to provide a varied diet to maintain optimal health and coloration.
  • Multiple small feedings per day recommended due to their specialized nutritional needs.

Habitat

  • Found predominantly in coral reef habitats and rocky substrates, typically between depths of 3 to 92 meters.
  • Prefers aquariums that closely replicate its natural environment with extensive rockwork and coral structures for hiding and grazing.
  • Stable water parameters with gentle to moderate currents are crucial for its well-being.
  • Requires ample swimming space along with hiding spots to reduce stress.

Fish Care

  • Optimal water temperature: 72-78°F (22-26°C).
  • Ideal pH level: 8.1-8.4, with specific gravity between 1.020-1.025.
  • Very sensitive to water quality; regular water changes and excellent filtration are mandatory.
  • Best suited for experienced aquarists due to dietary requirements and sensitivity to poor conditions.

Compatibility

  • Semi-aggressive; generally compatible with larger, robust species capable of withstanding occasional territorial disputes.
  • Should ideally be the only angelfish in a tank to prevent aggressive interactions and stress.
  • Not recommended to house with passive or timid fish due to its territorial nature.

Aquarium Behavior

  • Active, curious species, often seen exploring rockwork and corals for food.
  • Can exhibit territorial behaviors, especially if space is limited or in the presence of similar species.
  • Providing a large aquarium and ample hiding places helps reduce aggression and stress.