Acanthoclininae Günther, 1861 (taxonomy source)
Acanthuridae Bonaparte, 1835 (taxonomy source)
Acanthuroidei accepted as Acanthuriformes (taxonomy source)
Acipenseridae Bonaparte, 1831 (taxonomy source)
Acipenseriformes (taxonomy source)
Acropomatidae Gill, 1893 (taxonomy source)
Actinopteri (basis of record)
Agonidae Swainson, 1839 (taxonomy source)
Agoninae Swainson, 1839 (taxonomy source)
Albulidae Bleeker, 1849 (taxonomy source)
Albuliformes (taxonomy source)
Albulinae Bleeker, 1849 (taxonomy source)
Alepisauridae Swainson, 1839 (taxonomy source)
Alepocephalidae Bonaparte, 1846 (taxonomy source)
Alopiidae Bonaparte, 1835 (taxonomy source)
Ambassidae Klunzinger, 1870 (taxonomy source)
Amblyopinae Günther, 1861 (taxonomy source)
Ammodytidae Bonaparte, 1835 (taxonomy source)
Anabantoidei accepted as Anabantiformes (taxonomy source)
Anacanthobatidae von Bonde & Swart, 1923 (taxonomy source)
Ancistrinae Kner, 1854 (taxonomy source)
Anguillidae Rafinesque, 1810 (taxonomy source)
Anguilliformes (taxonomy source)
Anomalopidae Gill, 1889 (taxonomy source)
Antennariidae Jarocki, 1822 (taxonomy source)
Anthiinae Poey, 1861 accepted as Anthiadinae Poey, 1861 (taxonomy source)
Aphanopodinae Gill, 1863 (taxonomy source)
Aphyonidae Jordan & Evermann, 1898 (taxonomy source)
Apistidae Gill, 1859 (taxonomy source)
Aploactinidae Jordan & Starks, 1904 (taxonomy source)
Apogonidae Günther, 1859 (taxonomy source)
Apogoninae Günther, 1859 (taxonomy source)
Aracanidae Hollard, 1860 (taxonomy source)
Argentinidae Bonaparte, 1846 (taxonomy source)
Arhynchobatidae Fowler, 1934 (taxonomy source)
Ariidae Bleeker, 1858 (taxonomy source)
Ariinae Bleeker, 1858 (taxonomy source)
Ariommatidae Haedrich, 1967 (taxonomy source)
Astronesthinae Günther, 1864 (taxonomy source)
Ateleopodidae Bonaparte, 1850 (taxonomy source)
Ateleopodiformes (taxonomy source)
Atherinidae Risso, 1827 (taxonomy source)
Atheriniformes (taxonomy source)
Atherininae Risso, 1827 (taxonomy source)
Atherinomorinae Dyer & Chernoff, 1996 (taxonomy source)
Aulopidae Bonaparte, 1831 (taxonomy source)
Aulopiformes (taxonomy source)
Aulostomidae Rafinesque, 1815 (taxonomy source)
Bagridae Bleeker, 1858 (taxonomy source)
Balistidae Rafinesque, 1810 (taxonomy source)
Balitoridae Swainson, 1839 (taxonomy source)
Banjosidae Jordan & Thompson, 1912 (taxonomy source)
Barbinae Bleeker, 1859 (taxonomy source)
Barbourisiidae Parr, 1945 (taxonomy source)
Bathyclupeidae Gill, 1896 (taxonomy source)
Bathygadinae Jordan & Evermann, 1898 (taxonomy source)
Bathylagidae Gill, 1884 (taxonomy source)
Bathymyrinae Böhlke, 1949 (taxonomy source)
Belonidae Bonaparte, 1835 (taxonomy source)
Beloniformes (taxonomy source)
Bembridae Kaup, 1873 (taxonomy source)
Bembropinae Regan, 1913 accepted as Bembropidae Regan, 1913 (taxonomy source)
Berycidae Lowe, 1839 (taxonomy source)
Beryciformes (taxonomy source)
Blenniidae Rafinesque, 1810 (taxonomy source)
Blenniinae Rafinesque, 1810 (taxonomy source)
Blennioidei accepted as Blenniiformes (taxonomy source)
Bothidae Smitt, 1892 (taxonomy source)
Bramidae Bonaparte, 1831 (taxonomy source)
Bregmacerotidae Gill, 1872 (taxonomy source)
Brosmophycinae Gill, 1862 (taxonomy source)
Brotulinae Swainson, 1838 (taxonomy source)
Butinae Bleeker, 1874 (taxonomy source)
Bythitidae Gill, 1861 (taxonomy source)
Bythitinae Gill, 1861 (taxonomy source)
Caesionidae Bonaparte, 1831 (taxonomy source)
Callanthiidae Ogilby, 1899 (taxonomy source)
Callionymidae Bonaparte, 1831 (taxonomy source)
Callionymoidei accepted as Callionymiformes (taxonomy source)
Caproidae Bonaparte, 1835 (taxonomy source)
Caproidei accepted as Caproidae Bonaparte, 1835 (taxonomy source)
Caracanthinae Gill, 1885 (taxonomy source)
Carangidae Rafinesque, 1815 (taxonomy source)
Carapidae Poey, 1867 (taxonomy source)
Carapinae Poey, 1867 (taxonomy source)
Carcharhinidae Jordan & Evermann, 1896 (taxonomy source)
Carcharhiniformes (taxonomy source)
Centriscidae Bonaparte, 1831 (taxonomy source)
Centriscinae Bonaparte, 1831 (taxonomy source)
Centrolophidae Bonaparte, 1846 (taxonomy source)
Centrophoridae Bleeker, 1859 (taxonomy source)
Cepolidae Rafinesque, 1815 (taxonomy source)
Ceratiidae Gill, 1861 (taxonomy source)
Cetomimidae Goode & Bean, 1895 (taxonomy source)
Cetomimiformes (taxonomy source)
Cetorhinidae Gill, 1861 (taxonomy source)
Chaenopsidae Gill, 1865 (taxonomy source)
Chaetodontidae Rafinesque, 1815 (taxonomy source)
Champsodontidae Jordan & Snyder, 1902 (taxonomy source)
Chanidae Günther, 1868 (taxonomy source)