High Quality Content by WIKIPEDIA articles! Goatfishes are tropical marine perciform fish of the family Mullidae. Seldom found in brackish waters, goatfish are most associated with the reefs of the Atlantic, Indian, and Pacific Oceans. The goatfish are sometimes called the red mullets as opposed to the Mugilidae, the grey mullets, though that name is usually reserved for the red mullets of the genus Mullus of the Mediterranean. Within the family are approximately six genera and 55 species.