{{Taxobox
| name = Driftfishes
| image = Psenes pellucidus.jpg
| image_width = 240px
| image_caption = Bluefin driftfish, ''Psenes pellucidus''
| regnum = Animalia
| phylum = Chordata
| classis = Actinopterygii
| ordo = Perciformes
| familia = '''Nomeidae'''
| subdivision_ranks = Genera
| subdivision = 
''Cubiceps''<br/>
''Nomeus''<br/>
''Parapsenes''<br/>
''Psenes''<br/>
See text for species.
}}
'''Driftfishes''' are perciform fishes in the family '''Nomeidae'''. They are found in tropical and subtropical waters throughout the world.

The largest species, such as the Cape fathead, ''Cubiceps capensis'', reach one metre in length.

Several species are found in association with siphonophores such as the Portuguese man of war; the man-of-war fish, ''Nomeus gronovii'', is known to eat its tentacles and gonads, as well as feeding on other jellyfishes. Other species of driftfishes are associated with the floating seaweed ''Sargassum''. The Cape fathead feeds mainly on salps.  Some species of ''Cubiceps'' are occasionally caught on pelagic longlines set for swordfish.

<!-- Für Informationen zum Umgang mit dieser Tabelle siehe bitte Wikipedia:Taxoboxen. -->
{{Taxobox
| Taxon_Name       = Galeerenfische
| Taxon_WissName   = Nomeidae
| Taxon_Rang       = Familie
| Taxon2_Name      = Medusenfischartige
| Taxon2_WissName  = Stromateoidei
| Taxon2_Rang      = Unterordnung
| Taxon3_Name      = Barschartige
| Taxon3_WissName  = Perciformes
| Taxon3_Rang      = Ordnung
| Taxon4_Name      = Stachelflosser
| Taxon4_WissName  = Acanthopterygii
| Taxon4_Rang      = Überordnung
| Taxon5_Name      = Echte Knochenfische
| Taxon5_WissName  = Teleostei
| Taxon5_Rang      = Teilklasse
| Bild             = Nomeus gronovii.jpg
| Bildbeschreibung = ''Nomeus gronovii''
}}

Die '''Galeerenfische''' (''Nomeidae'') leben in allen tropischen und gemäßigten Teilen der Gattungen mit 18 Arten, die in größen Schwärmen epipelagisch leben und teilweise mit Schirm- und Staatsquallen zusammen wandern. Andere Arten leben in den treibenden Tangen der Gattung Sargassum. Die zwölf Zentimeter bis über einen Meter lang werdenden Fische ernähren sich von Zooplankton, kleinen Quallen und Fischen.

== Systematik ==
thumb|''Cubiceps caeruleus''
thumb|''Psenes pellucidus''
Es gibt 18 Arten in vier Gattungen:
* ''Cubiceps''
**''Cubiceps baxteri'' <small>(McCulloch, 1923)</small>.
**''Regan, 1914)</small>.
**''Cubiceps capensis'' <small>(Smith, 1845)</small>.
**''Cubiceps gracilis'' <small>(Lowe, 1843)</small>.
**''Cubiceps kotlyari'' <small>(Agafonova, 1988)</small>.
**''Cubiceps macrolepis'' <small>(Agafonova, 1988)</small>.
**''Cubiceps nanus'' <small>(Agafonova, 1988)</small>.
**''Cubiceps paradoxus'' <small>(Butler, 1979)</small>.
**''Günther, 1872)</small>.
**''Cubiceps squamiceps'' <small>(Lloyd, 1909)</small>.
*''Nomeus''
**''Gmelin, 1789)</small>.
*''Parapsenes''
**''Parapsenes rotundus'' <small>(Smith, 1949)</small>.
*''Psenes''
**''Günther, 1889)</small>.
**''Valenciennes, 1833)</small>.
**''Valenciennes, 1836)</small>.
**''Psenes pellucidus'' <small>(Lütken, 1880)</small>.
**''Psenes sio'' <small>(Haedrich, 1970)</small>.
**''Psenes whiteleggii'' <small>(Waite, 1894)</small>.