An order in the class Actinopterygii, subdivision Euteleostei, superorder Acanthopterygii. The Mugiliformes comprise 17 genera and about 72 species, all in the single family Mugilidae, the mullets (also known as grey mullets). Past classifications considered mullets as primitive perciforms; however, they are presently deemed subperciforms and are the only order in Mugilomorpha, one of three series making up the Acanthopterygii.