Mugiliformes
{{Short description|Order of fishes}}
{{Automatic taxobox
| fossil_range = {{fossil range|Early Eocene|recent}}
| image = Yellow-eye mullet (Aldrichetta forsteri) Sydney Zoo 2023-02-05.jpg
| image_caption = Yellow-eye mullet (Aldrichetta forsteri)
| taxon = Mugiliformes
| authority = Günther, 1880
| subdivision =
}}
Mugiliformes is a small order of percomorph fish in the clade Ovalentaria.{{Cite journal |last1=Wainwright |first1=Peter C. |last2=Smith |first2=W. Leo |last3=Price |first3=Samantha A. |last4=Tang |first4=Kevin L. |last5=Sparks |first5=John S. |last6=Ferry |first6=Lara A. |last7=Kuhn |first7=Kristen L. |last8=Eytan |first8=Ron I. |last9=Near |first9=Thomas J. |date=2012-12-01 |title=The Evolution of Pharyngognathy: A Phylogenetic and Functional Appraisal of the Pharyngeal Jaw Key Innovation in Labroid Fishes and Beyond |url=https://academic.oup.com/sysbio/article-abstract/61/6/1001/1666179 |journal=Systematic Biology |volume=61 |issue=6 |pages=1001–1027 |doi=10.1093/sysbio/sys060 |pmid=22744773 |issn=1063-5157}}{{Cite web |title=Mugiliformes Günther 1880 - Plazi TreatmentBank |url=https://treatment.plazi.org/id/AB0787CD0A4EFF90FDABFD0BE5872027 |access-date=2025-03-15 |website=treatment.plazi.org |language=en}}
This order is recognized by the Catalog of Fishes (2025). It contains only two families:{{Cite web |last1=Fricke |first1=R. |last2=Eschmeyer |first2=W. N. |last3=Van der Laan |first3=R. |date=2025 |title=ESCHMEYER'S CATALOG OF FISHES: CLASSIFICATION |url=https://www.calacademy.org/eschmeyers-catalog-of-fishes-classification |access-date=2025-02-10 |website=California Academy of Sciences |language=en}}{{Cite web |title=CAS - Eschmeyer's Catalog of Fishes - Genera/Species by Family/Subfamily |url=https://researcharchive.calacademy.org/research/ichthyology/catalog/SpeciesByFamily.asp |access-date=2025-03-12 |website=researcharchive.calacademy.org}}
- Mugilidae Jarocki, 1822 - mullets{{Cite journal |last1=Xia |first1=Rong |last2=Durand |first2=Jean-Dominique |last3=Fu |first3=Cuizhang |date=2016-03-01 |title=Multilocus resolution of Mugilidae phylogeny (Teleostei: Mugiliformes): Implications for the family's taxonomy |url=https://www.sciencedirect.com/science/article/abs/pii/S1055790315003899 |journal=Molecular Phylogenetics and Evolution |volume=96 |pages=161–177 |doi=10.1016/j.ympev.2015.12.010 |pmid=26739922 |bibcode=2016MolPE..96..161X |issn=1055-7903}} (57 species)
- Ambassidae Klunzinger, 1870 - Asiatic glassfishes (75 species)
File:Agassiz's glassfish (Ambassis agassizii) group Sydney Zoo aquarium 2023-03-08.jpg (Ambassis agassizii)]]
Until recently, this order was restricted to only the mullets, but phylogenetic studies support the Asiatic glassfishes (previously placed as incertae sedis within the Ovalentaria){{Cite journal |last1=Betancur-R |first1=Ricardo |last2=Wiley |first2=Edward O. |last3=Arratia |first3=Gloria |last4=Acero |first4=Arturo |last5=Bailly |first5=Nicolas |last6=Miya |first6=Masaki |last7=Lecointre |first7=Guillaume |last8=Ortí |first8=Guillermo |date=2017-07-06 |title=Phylogenetic classification of bony fishes |journal=BMC Evolutionary Biology |language=en |volume=17 |issue=1 |pages=162 |doi=10.1186/s12862-017-0958-3 |doi-access=free |issn=1471-2148 |pmc=5501477 |pmid=28683774|bibcode=2017BMCEE..17..162B }} being their closest relatives. The order is thought to be the sister group to the Blenniiformes. Other authors instead treat this order as a clade within an expanded Blenniiformes, and also find the Congrogadidae to be allied with the mullet-glassfish clade.{{Cite journal |last1=Near |first1=Thomas J. |last2=Thacker |first2=Christine E. |date=2024-04-18 |title=Phylogenetic Classification of Living and Fossil Ray-Finned Fishes (Actinopterygii) |url=https://bioone.org/journals/bulletin-of-the-peabody-museum-of-natural-history/volume-65/issue-1/014.065.0101/Phylogenetic-Classification-of-Living-and-Fossil-Ray-Finned-Fishes-Actinopterygii/10.3374/014.065.0101.full |journal=Bulletin of the Peabody Museum of Natural History |volume=65 |issue=1 |page=101 |doi=10.3374/014.065.0101 |bibcode=2024BPMNH..65..101N |issn=0079-032X}}