Acanthuridae Bonaparte, 1835 (taxonomy source)
Acanthuroidei accepted as Acanthuriformes (taxonomy source)
Achiridae Rafinesque, 1815 (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)
Amiidae Bonaparte, 1831 (taxonomy source)
Amiiformes (taxonomy source)
Ammodytidae Bonaparte, 1835 (taxonomy source)
Anablepidae Bonaparte, 1831 (taxonomy source)
Anablepinae Bonaparte, 1831 (taxonomy source)
Anarhichadidae Bonaparte, 1835 (taxonomy source)
Anguillidae Rafinesque, 1810 (taxonomy source)
Anguilliformes (taxonomy source)
Anomalopidae Gill, 1889 (taxonomy source)
Anoplagoninae Gill, 1861 (taxonomy source)
Anoplogastridae Gill, 1893 (taxonomy source)
Anoplopomatidae Jordan & Gilbert, 1883 (taxonomy source)
Anoplopomatoidei accepted as Anoplopomatidae Jordan & Gilbert, 1883 (taxonomy source)
Anotopteridae Zugmayer, 1911 (taxonomy source)
Antennariidae Jarocki, 1822 (taxonomy source)
Anthiinae Poey, 1861 accepted as Anthiadinae Poey, 1861 accepted as Anthiadidae Poey, 1861 (taxonomy source)
Aphanopodinae Gill, 1863 (taxonomy source)
Aphyonidae Jordan & Evermann, 1898 (taxonomy source)
Apogonidae Günther, 1859 (taxonomy source)
Apogoninae Günther, 1859 (taxonomy source)
Aptocyclinae Ueno, 1970 accepted as Cyclopteridae Bonaparte, 1831 (source of synonymy)
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)
Atherinopsidae Fitzinger, 1873 (taxonomy source)
Atherinopsinae Fitzinger, 1873 (taxonomy source)
Aulopiformes (taxonomy source)
Aulorhynchidae Gill, 1861 (taxonomy source)
Bagreinae Schultz, 1944 (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)
Bathyagoninae Lindberg, 1971 (taxonomy source)
Bathyclupeidae Gill, 1896 (taxonomy source)
Bathygadinae Jordan & Evermann, 1898 (taxonomy source)
Bathylagidae Gill, 1884 (taxonomy source)
Bathymasteridae Jordan & Gilbert, 1883 (taxonomy source)
Bathymyrinae Böhlke, 1949 (taxonomy source)
Bathysauridae Fowler, 1944 (taxonomy source)
Batrachoididae Jordan, 1896 (taxonomy source)
Batrachoidiformes (taxonomy source)
Batrachoidinae Jordan, 1896 (taxonomy source)
Belonidae Bonaparte, 1835 (taxonomy source)
Beloniformes (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)
Blennioidei accepted as Blenniiformes (taxonomy source)
Bothidae Smitt, 1892 (taxonomy source)
Bothragoninae Lindberg, 1971 (taxonomy source)
Brachyopsinae Jordan & Evermann, 1898 (taxonomy source)
Bramidae Bonaparte, 1831 (taxonomy source)
Bregmacerotidae Gill, 1872 (taxonomy source)
Brosmophycinae Gill, 1862 (taxonomy source)
Brotulinae Swainson, 1838 accepted as Brotulidae Swainson, 1838 (taxonomy source)
Brotulotaeniinae Cohen & Nielsen, 1978 (taxonomy source)
Bythitidae Gill, 1861 (taxonomy source)
Bythitinae Gill, 1861 (taxonomy source)
Callichthyidae Bonaparte, 1835 (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)
Carangidae Rafinesque, 1815 (taxonomy source)
Carapidae Poey, 1867 (taxonomy source)
Carapinae Poey, 1867 (taxonomy source)
Carcharhinidae Jordan & Evermann, 1896 (taxonomy source)
Carcharhiniformes (taxonomy source)
Caristiidae Gill & Smith, 1905 (taxonomy source)
Catostomidae Agassiz, 1850 (taxonomy source)
Caulophrynidae Goode & Bean, 1896 (taxonomy source)
Centrarchidae Bleeker, 1859 (taxonomy source)
Centriscidae Bonaparte, 1831 (taxonomy source)
Centrolophidae Bonaparte, 1846 (taxonomy source)
Centrophoridae Bleeker, 1859 (taxonomy source)