It is really hard to find good info on the Caribbean parrotfish. I'ld love to hear from someone who has kept some of them.
I have talked to a marine biologist who told me that I'ld be best to steer clear of them because they all eat coral.
K&P Aquatics lists the Greenblotch Parrotfish, Sparisoma atomarium, as reef safe. Just not sure.
Ditto on Quoyis are my favorite saltwater fish. Best algae eating fish consuming more algae than a tang by far!