Moroniformes is an order of in the Clade Percomorpha.
Families
Moroniformes comprises three families according to the 5th edition of the
Fishes of the World:
Classification
Moroniformes is classified as an order within the series Percomorpha in the 5th edition of
Fishes of the World but the authors of that text acknowledge that their classification of the order is rather tentative.
[ Later authors recognise that two of the families, the Ephippidae and the Drepaneidae are closely related and classified in the order Ephippiformes but that Moronidae is incertae sedis in their series Eupercaria.] Other authorities classify all three families in the Moroniformes sensu Fishes of the World in the Acanthuriformes.