Between brackets is the number of accepted extant species
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Shows the number of accepted extant species within the taxon
The last expanded taxon is highlighted
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- Biota (879)
- Kingdom Animalia (681)
- Phylum Annelida (119)
- Phylum Arthropoda (168)
- Phylum Bryozoa (3)
- Phylum Chaetognatha (2)
- Phylum Chordata (276)
- Subphylum Tunicata (6)
- Subphylum Vertebrata (270)
- Infraphylum Agnatha (3)
- Infraphylum Gnathostomata (267)
- Parvphylum Chondrichthyes (6)
- Parvphylum Osteichthyes (124)
- Gigaclass Actinopterygii (124)
- Superclass Actinopteri (124)
- Class Chondrostei (1)
- Class Teleostei (123)
- Order Anguilliformes (2)
- Order Atheriniformes (2)
- Order Beloniformes (2)
- Order Blenniiformes (1)
- Order Callionymiformes (2)
- Order Carangiformes (2)
- Order Centrarchiformes (1)
- Order Clupeiformes (6)
- Order Cypriniformes (26)
- Order Esociformes (2)
- Order Eupercaria incertae sedis (4)
- Order Gadiformes (13)
- Order Gasterosteiformes accepted as Gasterosteoidei
- Order Gobiiformes (9)
- Order Mugiliformes (3)
- Order Mulliformes (1)
- Order Osmeriformes (1)
- Order Perciformes (20)
- Suborder Blennioidei accepted as Blenniiformes
- Suborder Callionymoidei accepted as Callionymiformes
- Suborder Cottoidei (6)
- Family Agonidae Swainson, 1839 (1)
- Family Cottidae Bonaparte, 1831 (3)
- Genus Cottus Linnaeus, 1758 (1)
- Genus Myoxocephalus Tilesius, 1811 (1)
- Genus Taurulus Gratzianov, 1907 (1)
- Species Taurulus bubalis (Euphrasen, 1786)
- Family Cyclopteridae Bonaparte, 1831 (1)
- Family Liparidae Gill, 1861 (1)
- Suborder Gasterosteoidei (2)
- Suborder Gobioidei accepted as Gobiiformes
- Suborder Labroidei accepted as Eupercaria incertae sedis
- Suborder Percoidei (5)
- Suborder Scorpaenoidei (3)
- Suborder Trachinoidei accepted as Uranoscopoidei
- Suborder Uranoscopoidei (2)
- Suborder Xiphioidei accepted as Xiphiidae Rafinesque, 1815
- Suborder Zoarcoidei (2)
- Order Pleuronectiformes (12)
- Order Salmoniformes (5)
- Order Scombriformes (1)
- Order Scorpaeniformes accepted as Scorpaenoidei
- Order Siluriformes (2)
- Order Syngnathiformes (6)
- Megaclass Tetrapoda (137)
- Superclass Pisces
- Phylum Cnidaria (5)
- Phylum Ctenophora (3)
- Phylum Echinodermata (7)
- Phylum Kinorhyncha (2)
- Phylum Mollusca (70)
- Phylum Nematoda (1)
- Phylum Platyhelminthes (1)
- Phylum Porifera (2)
- Phylum Rotifera (22)
- Kingdom Bacteria (5)
- Kingdom Chromista (179)
- Kingdom Plantae (14)
- Kingdom Protozoa