The marbled grouper (Dermatolepis inermis) is a species of fish in the Serranidae family. Other common names include donkey fish, mutton hamlet, rockhind, and sicklefish grouper. It is found in Anguilla, Antigua and Barbuda, Aruba, the Bahamas, Barbados, Belize, Bermuda, Brazil, Cayman Islands, Colombia, Costa Rica, Cuba, Dominica, the Dominican Republic, French Guiana, Grenada, Guadeloupe, Guatemala, Guyana, Haiti, Honduras, Jamaica, Martinique, Mexico, Montserrat, Netherlands Antilles, Nicaragua, Panama, Puerto Rico, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Suriname, Trinidad and Tobago, Turks and Caicos Islands, the United States, Venezuela, the British Virgin Islands, and the U.S. Virgin Islands.