The Queen Angelfish, scientifically as Holacanthus ciliaris, is a colorful, coral dwelling marine fish identified by its notable forehead marking. It is the forehead marking that differentiates the queen angelfish from the similar (to the point of being able to interbreed) Bermuda blue angelfish. Queen Angelfish are found near the ocean floor in warm, Atlantic waters that house coral reefs. The Queen Angelfish lives in harems that consist of one male and as many as four females. Within this group, the male Queen Angelfish tends to the females and they breed in correlation with the full moon.

On the heads of the Queen Angelfish is a speckled blue-ringed black spot, from which it gets its name. It is easily identified by its colorful appearance. The body is covered in electric blue, while the tail has a yellow blaze with light purple and orange highlights. It has long upper and lower fins streaming dramatically behind it. The head is round, and the mouth beak-like. The Queen Angelfish is a shy marine ray-finned fish found in the warm parts of the Western Atlantic Ocean, preferring to be near reefs. It is also called golden angelfish, blue angelfish, or yellow angelfish, found in pairs or alone and prefer forming monogamous relationships.