The graysby, Cephalopholis cruentata, is a grouper in the Serranidae family from the Western Atlantic. It is found from North Carolina to southern Florida (USA), Bermuda, the Gulf of Mexico, the Bahamas, and the Caribbean. Its typical size is 15 to 25 cm (6 to 10 in) in length, with a maximum size of 42 cm (16.5 in).