{{Short description|Genus of ray-finned fishes}} {{About|the genus of scombriforms|the trout|Brook trout}} {{Automatic taxobox | name = Squaretails | image = Tetragonurus cuvieri (smalleye squaretail).gif | image_caption = Smalleye squaretail, ''Tetragonurus cuvieri''<br> Drawing by Dr Tony Ayling | taxon = Tetragonurus | authority = Risso, 1810 | display_parents = 3 | type_species = ''Tetragonurus cuvieri'' | type_species_authority = Risso, 1810 | subdivision_ranks = Species | subdivision = See text. | synonyms = ''Ctenodax'' <small>Macleay, 1886</small> | synonyms_ref = <ref>{{cite WoRMS|author=Bailly, Nicolas |year= 2014|title=''Tetragonurus'' Risso, 1810 |id=126093 |access-date=1 September 2024}}</ref> }}

The '''squaretails''' are a genus, '''''Tetragonurus''''', of scombriform ray-finned fishes, the only genus in the family '''Tetragonuridae'''.

They are found in tropical and subtropical oceans, and feed on jellyfish and ctenophores.

==Species== The three species are: * Bigeye squaretail, ''T. atlanticus'' <small>Lowe, 1839</small> * Smalleye squaretail, ''T. cuvieri'' <small>Risso, 1810</small> * Pacific squaretail, ''T. pacificus'' <small>Abe, 1953</small> ;Synonyms *''Tetragonurus simplex'' {{small|Lowe, 1834}} accepted as ''Ruvettus pretiosus'' {{small|Cocco, 1833}}

==Timeline==

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bar:era from: -65.5 till: -23.03 color:paleogene text:Paleogene from: -23.03 till: -2.588 color:neogene text:Neogene from: -2.588 till: 0 color:quaternary text:Q.

</timeline>

==References== {{Reflist}} * {{FishBase family | family = Tetragonuridae | year= 2006 | month = February}} * {{FishBase genus | genus = Tetragonurus | year= 2006 | month = February}}

{{Taxonbar|from=Q2116400}}

Category:Tetragonuridae

{{Scombroidei-stub}}