Green-blotched Parrotfish
Scarus quoyi
Also known as: Quoy's parrotfish
A reef grazer that roams coral channels in small, peaceful groups.

About
The green-blotched parrotfish (Scarus quoyi) is a mid-sized member of a family well known for their fused, beak-like teeth and their role as constant grazers on reef algae. Found across a wide stretch of the Indo-West Pacific, from India east to Vanuatu and as far north as the Ryukyu Islands, this species gravitates toward the outer edges of reefs and channel areas rich in coral growth. In the wild, individuals venture onto intertidal flats at high tide to feed, working through algae with that characteristic scraping motion parrotfish are famous for. They tend to be seen alone or drifting in small loose groups, and their temperament in captivity follows suit. Generally peaceful and not inclined to harass tankmates. That said, parrotfish as a group are notoriously difficult to keep long-term, and the green-blotched is no exception. Their constant need to graze makes replicating a suitable diet one of the bigger challenges, and they really do best when keepers can provide conditions that mimic a well-established reef environment. This is a species better suited to intermediate or experienced fishkeepers who understand the demands of the family, rather than a straightforward pick for a community setup.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Green-blotched Parrotfish
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Green-blotched Parrotfish get?
- The Green-blotched Parrotfish reaches about 7–15.5" as an adult.
- What size tank does the Green-blotched Parrotfish need?
- A minimum of 125 gallons is recommended for the Green-blotched Parrotfish.
- What water parameters does the Green-blotched Parrotfish need?
- The Green-blotched Parrotfish does best with a temperature of 78–80°F, a pH of 8.1–8.4, hardness around 8–12 dGH.
- Is the Green-blotched Parrotfish aggressive?
- The Green-blotched Parrotfish is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Green-blotched Parrotfish eat?
- The Green-blotched Parrotfish is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Green-blotched Parrotfish live?
- With good care, the Green-blotched Parrotfish typically lives 1-5 years.
- Is the Green-blotched Parrotfish reef safe?
- The Green-blotched Parrotfish is generally considered reef safe.