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Rock Beauty Angelfish

The bright yellow color of the rock beauty angelfish (Holacanthus tricolor) makes it stand out on the reef. It is also sometimes called a corn sugar, coshubba, and yellow nanny. The young juveniles of this species are completely yellow. They develop the large black spot as they mature. Rock beauties are found throughout the Caribbean and central Atlantic as far south as Brazil. They grow to a length of 10 inches (25 centimeters) and feed primarily on sponges. They also eat tunicates, jellyfish, and corals, as well as plankton and algae.