Quoys Parrotfish,Scarus quoyi, is a beautiful and colorful aquarium species that can reach up to 15 inches in length in the wild. However, in the aquarium, they usually remain smaller due to inadequate feeding. These herbivores scrape their teeth over coral and rocks to eat algae and break some bits and pieces away from the coral with their front teeth. Loose pieces of dead coral are ground into sand and disposed of through the gills. To keep this species healthy and vibrant, it is recommended to feed them vegetable flakes, Nori, hard food such as small crabs and shrimps, and target feed them with mysis, brine shrimp, the occasional mussel, or small crab.

To accommodate their active swimming behavior and feeding habits, a large aquarium of at least 300 gallons is recommended for a solitary male, while a harem of one male with a few females requires an even larger aquarium. Provide enough coral for them to scrape off some algae, as they patrol the corals and reefs looking for something to eat. This active species combines well with other fish species and usually leaves invertebrates alone, but a combination with other Parrotfish is not recommended due to territorial behavior.